Bits und BoltsI finally have a Wavetable expansion! If you have an ISA soundcard, you might want to have a look at this amazing project! For little money, you can build your own Wavetable expansion board which will upgrade your soundcard to level you would have never expected! You will get full General MIDI support as well as Roland MT-32/CM-32L.
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Unbelievable Sound on a Budget: Emulate General MIDI and Roland MT-32!Bits und Bolts2025-03-13 | I finally have a Wavetable expansion! If you have an ISA soundcard, you might want to have a look at this amazing project! For little money, you can build your own Wavetable expansion board which will upgrade your soundcard to level you would have never expected! You will get full General MIDI support as well as Roland MT-32/CM-32L.
▬▬▬▬ *PCBWay* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Sponsored by PCBWay: 🔸pcbway.com/g/lF253I PCBWay provides full feature custom PCB prototyping services, 3D printing, and much more. Check them out using my referral link above and get a 5 USD welcome bonus when you sign up as a new customer!
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Wavetable and Soundcards 02:38 The WavetablePi 04:43 PCBWay 05:34 WavetablePi soldering 17:54 WavetablePi assembly 23:21 mt32-pi configuration: Soundfonts 29:45 Configure Soundcard 30:23 X-Wing: Soundblaster 31:41 X-Wing: General MIDI 35:13 mt32-pi configuration: MT-32 35:55 X-Wing: MT-32 40:08 The Secret Of Monkey IslandThis Trick Can Double Your VGA Performance In DOS!Bits und Bolts2025-08-28 | Have you ever heard of VESA or VBE? VBE 2.0 revolutionized DOS graphics programming by introducing a linear framebuffer that eliminated the cumbersome bank switching of earlier versions, allowing for direct and much faster access to video memory which could genuinely double performance in VGA-intensive applications. Beyond speed, it added protected mode support and enhanced compatibility with non-VGA controllers, making it easier for developers to create high-resolution, color-rich games and software without hardware-specific hacks. Dive into the video to uncover the simple trick that unlocks this power and transforms your retro PC setup!
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 VESA BIOS Extensions 01:54 Identify your VBE version 02:37 PC Player Benchmark Secrets 04:24 VBE 1.2 vs VBE 2.0 05:42 Banked Memory Explained 08:02 More than 640K Conventional Memory 10:52 Duke 3D Screen Setup 14:41 UniVBE / Enable VBE 2.0 19:09 Benefits of the Linear Frame Buffer 20:32 Visualize the Linear Frame Buffer 21:46 Linear Frame Buffer Tests 23:42 S3 Trio64V2/DX BIOS VBE 2.0 compliant 24:06 SupportersHeavy Corrosion: 386SX-25 Needs Your Help!Bits und Bolts2025-08-21 | This video is brought to you by PCBWay #sponsored During my last visit to the scrapyard, I picked up this poor 386SX-25. The board is heavily corroded and needs a full restoration. The culprit is the barrel battery located near the keyboard controller. Let's see if we can fix it!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Overview 02:42 Removing ICs 03:45 PCBWay 04:33 Under the microscope 06:44 Restoration 10:33 Three days later 11:56 First try 12:38 Replace BIOS chips 13:45 Keyboard issues 16:38 Second try and Benchmarks 20:39 Memory tests 22:41 Random resets 23:00 Your inputWhat Retro Hardware can you find at a Scrapyard?Bits und Bolts2025-08-14 | This time, I will take you to the place where I find most of the hardware I show on my channel. If this type of video is enjoyable to you, let me know and I will make more of those! Let's see what I can find this time!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Arriving 01:40 Motherboards 02:15 IBM 6x86 03:09 Returning Scrap 03:36 Unknown Server 04:35 Scrap from Germany 05:50 Motherboard Mountains 06:50 Socket 2 07:30 Slot 1 08:14 New Delivery 08:28 386SX + 387SX 08:50 Intel 486DX 09:16 Socket 3 Boards 10:08 Apple Powermac G3 Board 11:04 386SX - 25 MHz 11:35 Cirrus Logic VLB 11:58 Cyrix 5x86 100GP 12:12 Sound Blaster 2.0 12:48 Random bag full of cards 13:16 Thermal Camera 14:15 Network equipment 14:54 Another random pile of hardware 15:53 Aztech Soundcard 16:22 POS Devices 16:54 Massive bags with MotherboardsNot for the Faint-Hearted: This Voodoo 5 5500 went through a Reflow OvenBits und Bolts2025-08-07 | This is the first time I look at a Voodoo 5 5500. It is not working - obviously. But will it ever work again is a totally different story. Today, we are going to look at the aftermath of sending this Voodoo 5 through a reflow oven and if this is a good idea to do if your precious retro hardware shows artifacts.
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 CHIP Magazine - Issue July 2000 03:58 A first look at the Voodoo 5 5500 05:35 Under the microscope 08:14 Looking for shorts 11:03 Condition of the VSA-100 14:05 ConclusionBars And Stripes! 3Dfx Voodoo Graphics RepairBits und Bolts2025-07-31 | This video is brought to you by PCBWay #sponsored A viewer sent me his 3Dfx Voodoo Graphics board, which exhibits vertical strips or bars and fails to produce any video output. He also provided a thermal image showing one of the memory chips overheating. He replaced the chip, but even though the hotspot is now gone, the card still doesn't work. Let's troubleshoot the card and see if we can figure out what is wrong with it.
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The Fault 01:45 Troubleshooting approach 02:14 Measuring 06:12 PCBWay 06:48 First Memory Chip 08:20 Second Memory Chip 10:01 Measuring the Chips 11:27 Cleanup and New Chips 13:57 Remeasure 15:09 Testing 18:00 Like and SubscribeHow Much Level-2 Cache Do You Need?Bits und Bolts2025-07-24 | The PCChips M915i gets a cache upgrade! Well, it didn't have any cache before since all it came with were fake cache chips. The BIOS is updated and supports L2 cache, but I want to find out if we can get 512 or even 1024K of L2 cache working on this board. Another question I would like to answer is, does the board support enhanced DX2 CPUs with write-back L1 cache. At the end of this video, you will be able to make your own decision what is best for your retro system.
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Recap 00:56 Progress 01:33 A better board 05:15 Write-Through vs Write-Back 08:40 1024K L2 cache 10:05 Benchmarks 10:56 DOOM 11:26 Quake 11:50 TopBench 12:08 3D Bench 12:33 Chris 3D Benchmark 12:52 NSSI 13:12 SpeedSys 14:25 ConclusionSocket 3 Nightmare: New Old Stock, But Then I Bricked It!Bits und Bolts2025-07-17 | PCChips... Do I need to say more? This is the M915i Socket 3 motherboard for 486 microprocessors. The board here for repair, but I don't know what is wrong with it. We will test the board and discover some wild issues along the way. Yes, there is fake cache soldered to the PCB, but would you believe me when I say that this isn't the craziest discovery? Join me and let's find out why this board is so terrible!
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The PCChips M915i overview 03:28 Testing for shorts and CPU Vcore 06:12 FPM vs EDO memory 07:05 The AMI BIOS 07:58 Testing for fake cache 09:33 Removing soldered chips 13:15 Where things go wrong 13:50 Realization 14:50 MIDI FORGE AWE64 Memory Boards 15:40 Not giving up 18:40 Pin investigation 23:28 Resolution 25:03 The patched fake cache BIOSMaximum Memory for Your Sound Blaster AWE64!Bits und Bolts2025-07-10 | This video is brought to you by PCBWay #sponsored Introducing the MIDI FORGE Sonata! Getting this memory expansion board working for the Sound Blaster AWE64 was a challenge. Join me as I dive into selecting working pull-up resistors for the LSF0108 bidirectional voltage translator to unlock a massive 28MB of memory. This upgrade enables the AWE64 to handle the largest sound fonts possible on this sound card, pushing its limits to the max!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Another Memory Board 01:06 Revision 1.0 03:24 Poor Audio Samples 6:23 A New Level Shifter 09:09 PCBWay 09:50 Pull-Up Resistor 1KΩ 12:36 Pull-Up Resistor 1.5KΩ 13:22 Pull-Up Resistor 2KΩ 16:06 28MB Sound Fonts 20:58 New PCBs have arrived 23:44 Where to get 24:18 Conclusion2MB, 8MB, 12MB Sound Blaster AWE64 ModificationBits und Bolts2025-07-03 | This video is brought to you by PCBWay #sponsored The AWE64 Value comes with just 512KB of onboard memory, while the Gold version has 4MB, used for loading sound fonts to enhance MIDI playback. The Value edition is notably limited by its small memory capacity. In this video, we are going to modify the AWE64 Value and increase the onboard memory from 512KB to 2MB. We will also see the MIDI FORGE Minuet - a DIY memory expansion board for the AWE64 sporting 8MB of additional storage. #midi #creative #retro
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Recap / Creative 01:51 Memory board alternatives 05:44 512KB memory 09:26 Modify AWE64 Value to 2MB 10:37 PCBWay 14:04 2MB memory 16:08 4MB memory 18:08 12MB memory 20:44 10MB memory 24:53 BASEM0 and BASEM1 27:55 Where to get the Minuet 30:14 8MB memoryWhy Didnt I Try This Sooner? My First SCSI Drive Adventure!Bits und Bolts2025-06-26 | This video is sponsored by Brilliant. Try Brilliant for free for 30 days at brilliant.org/BitsundBolts and get 20% off an annual premium subscription. Master programming, logic, and more with interactive lessons! #sponsored
It is almost embarrassing to confess that I have never tried a SCSI setup. In this video, I document my journey of setting up a 1GB SCSI hard drive from Seagate and a Plextor SCSI CD-ROM using an Adaptec AHA-1542CF. It is safe to say that it is going to be a bumpy ride!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Seagate ST41200N 94601-12G 05:10 First Power On 06:05 Plextor PX-12TSi 07:12 Adaptec AHA-1542CF 11:47 Brilliant 12:36 Test System: M396F v2.6 13:12 Orchid Technology ProDesigner IIS 13:38 Setup SCSI system 15:55 Trying to access the drive 17:22 Remove the "Start Unit Command" jumper 21:18 The unexpected fix 22:48 Exploring the "Start Command" and verifying the media 27:17 First access to drive C 29:57 Adaptec EZ-SCSI installation 35:51 ConclusionMy Childhood S3 Trio64V+ is Dead! Can We Save It?Bits und Bolts2025-06-19 | This video is brought to you by PCBWay #sponsored Back in the ‘90s, my AMD 486 DX4-100 rocked a 1MB S3 Trio64V+ - not the fanciest 2MB or mythical 4MB models, but it was my pride and joy. Fast forward 30 years, I dusted it off, only to find it completely dead. No boot, no display, no life. Join me as I dive into troubleshooting this retro gem to see if we can bring my childhood VGA card back from the grave!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 My S3 Trio64V+ 02:19 The donor cards 03:40 PCBWay 04:20 Desolder S3 chip 07:51 Swap the chips 09:09 Testing 09:42 Memory upgrade 12:33 Benchmarks 13:05 ConclusionDIY Wavetable Board - Time to Build Your Own!Bits und Bolts2025-06-12 | This video is sponsored by Flux. Try Flux for free for 14 days at flux.ai/signup?utm_source=influencer&utm_medium=organic_social&utm_campaign=Bits_und_Bolts PCB design paired with powerful AI features! #sponsored
The MIDI FORGE Maestro is finally here! Get your own PCBs now and build your own wavetable board for your vintage sound cards. In this video, I'll share some insights on how I assemble one of these boards to realize a 1-slot solution.
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Recap 02:56 Flux.ai 04:02 Overview of parts 08:15 Pin header plastic support 09:06 Placing components 11:53 Soldering 15:12 1-slot solution 15:24 Testing functionality 18:02 Testing external screen 19:30 Larger screen 20:58 Additional informationWhat’s Causing These Wild Artifacts on a 3dfx Voodoo 3 1000?Bits und Bolts2025-06-05 | A 3dfx Voodoo 3 1000 riddled with artifacts! Is it a failing memory chip, bad solder, or a damaged 3dfx core? Let’s troubleshoot this classic GPU and see if we can bring it back to life. Share your thoughts below and join the retro repair journey!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The Voodoo 3 1000 02:46 First test 03:45 Pressure test 04:23 A closer look 07:12 PCBWay 07:50 Repair attempt 10:38 Second test 11:35 Heatsink 12:42 Drivers and 3D test 14:58 ConclusionHow Does the Sound Blaster AWE64 Access Memory?Bits und Bolts2025-05-29 | This video is sponsored by Brilliant. Try Brilliant for free for 30 days at brilliant.org/BitsundBolts and get 20% off an annual premium subscription. Master programming, logic, and more with interactive lessons! #sponsored
In this video, I will explain how the Sound Blaster AWE64 access the memory that is attached via two pin headers. Why are there four GAL chips on the original memory expansion board, and how we can design our own memory board for the Sound Blaster AWE64.
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The AWE64 memory interface 00:50 Electrical signals from the AWE64 05:14 The 24MB expansion on the AWE64 Gold 05:59 The 1Mx16 memory chips 07:08 The role of the GAL chips 07:53 Brilliant.org 09:00 The Rhapsody 4Mx4 memory chips 11:54 The Rhapsody GAL Equations 13:15 The Rhapsody memory chip layout 17:27 The Rhapsody GameI cloned the AWE64 memory board!Bits und Bolts2025-05-22 | UPDATE: Sorry for this update, but I had to take down the project to sort out some issues with Creative - looks like they aren't OK with the "Sound Blaster" and "AWE64" logo on the PCB after all. However, I am working with them to get this project back online! It probably will just be an altered PCB without the logos from Creative. A follow-up video will go up as soon as possible to explain the situation.
Do you own a Creative Sound Blaster AWE64 but lack the memory expansion to load large sound fonts? The MIDI FORGE Symphony is here to solve the notorious shortage of memory expansion for the AWE64!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Sound Blaster Memory 03:03 MIDI FORGE Symphony 03:22 Creative Technology Permission 03:48 Complexity of the PCB 04:42 Preparation for Assembly 08:10 PCB Assembly 10:16 PCBWay 10:58 The first MIDI FORGE Symphony 11:47 The first tests 15:25 The final revision 17:57 Showcase 18:45 How to get the MIDI FORGE Symphony 20:48 Future project: MIDI FORGE Rhapsody 21:35 Your opinion mattersAWE64 Memory: MIDI FORGE Symphony TeaserBits und Bolts2025-05-17 | MIDI FORGE Symphony: AWE64 Memory Expansion Board Subscribe to not miss the launch of the MIDI FORGE Symphony!
And if you can't wait, you can get early access: patreon.com/posts/early-access-diy-127889991This is why you need an ISA video card!Bits und Bolts2025-05-15 | A mail-in from Brazil! A SOYO Slot 1 motherboard in AT form factor. The SY-6KL is an early motherboard that only supports up to 66MHz FSB due to its Intel 440LX chipset. The board does not post and the owner was suspecting a bad BIOS, but that isn't everything that is wrong with this board.
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Soyo SY-6KL 03:03 Remove capacitors 07:05 PCBWay 07:54 Replacement capacitors 09:30 First test & troubleshooting 11:15 Try an ISA VGA card 13:21 Flashing the BIOS 15:35 SummaryDifferent CPUs on a Dual-Socket Motherboard? ABIT BP6!Bits und Bolts2025-05-08 | The manual states: "To install two Socket 370 processors, we strongly recommend you to use the same speed CPUs. Otherwise, your system may not operating properly". But what happens if we don't? Let's find out and have a closer look at Symmetric multiprocessing - or in this case: Asymmetric Multiprocessing.
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Celeron Mendocino 01:45 Dual 466 MHz 02:49 Single 400 MHz 04:39 Single 533 MHz 06:26 Asymmetric: 533 MHz & 400 MHz 10:00 Double 533 MHz 11:04 Asymmetric: 400 MHz & 533 MHz 14:16 Charts4 Months Later: SOUND Brush 55 Restoration Results!Bits und Bolts2025-05-01 | The SOUND Brush 55 is reunited with its owner, reassembled, and ready for testing! This was a restoration project I showed on my channel four month ago. Today, we will find out if the work paid off!
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Recap 01:21 Success or Failure 01:40 Yamaha Tone Generator demonstration 03:02 Star Games demonstration 03:35 Yamaha XG demonstration 06:20 MIDI FORGE Maestro update 08:37 MIDI FORGE Symphony reveal 10:40 MIDI FORGE Rhapsody revealABIT-BP6: Multi-Processor motherboard for the Masses!Bits und Bolts2025-04-24 | A donation to the channel: The ABIT-BP6 - a dual socket 370 motherboard. We need to fix one known-bad capacitor and preemptively fix an instability issue that plagues those boards. Most of the capacitors have already been replaced.
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The ABIT-BP6 and two Celerons 05:18 Replacing the capacitors 10:58 First power-on 16:21 OverclockingTreacherous Voodoo 2: Hunting a Blue Texture Glitch!Bits und Bolts2025-04-17 | A viewer sent me this Voodoo 2, labeled as faulty. At first, it seemed to work perfectly - until 3DMark99 revealed sneaky blue floor textures! Join me as I hunt down this treacherous glitch. Can it be fixed? Let’s find out!
▬▬▬▬ *PCBWay* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Sponsored by PCBWay: 🔸pcbway.com/g/lF253I PCBWay provides full feature custom PCB prototyping services, 3D printing, and much more. Check them out using my referral link above and get a 5 USD welcome bonus when you sign up as a new customer!
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The Voodoo 2 00:32 Visual inspection 07:38 Testing the faulty card 09:03 Blue Floors 09:27 Hunting down the texture glitch 10:55 PCBWay 11:32 Reflowing all 3Dfx chips 16:16 Fixing capacitor 16:47 Fixing traces 18:29 Testing the Voodoo 2MIDI FORGE: Maestro - DIY Wavetable for everyone!Bits und Bolts2025-04-10 | The MIDI FORGE: Maestro PCBs have finally arrived! Let's find out how many mistakes I made when designing this PCB. But let's also check the additional features I included over the WavetablePi. There are four buttons which control which synthesizer is selected, what soundfont/MT-32 ROM files is selected, and a simple volume up/down control. This PCB will be available for anyone who would like to build their own Wavetable board!
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Get your own MIDI FORGE: Maestro PCBs from PCBWay: - coming soon -
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Recap of my road to a Wavetable board 03:53 PCBWay 04:35 Fixing the button traces 07:28 Trouble with height 08:47 Soldering!!! 24:17 The Maestro in pieces 26:40 Testing 32:21 Road to revision 1.1The Hanging Note Bug Fix Is HERE! (Part 2/2)Bits und Bolts2025-04-03 | Struggling with the Hanging Note Bug on your Creative Soundcard? If your Soundblaster 16/32 or AWE32 is driving you crazy with stuck notes, you will love this! Discover a simple hardware fix that’ll save your retro audio gear -no more glitches, just crystal-clear sound. The cards that you should avoid - specifically the ones with DSP 4.11, 4.12 and 4.13 are an option again!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 MIDI FORGE: Maestro update 01:36 What to expect today 03:21 PCBWay 04:01 MIDI files 09:00 Yamaha OPL and MPU-401 11:23 Two types of hanging notes 12:45 How does a note get stuck 14:57 How does FixMPU mitigate the bug 16:05 Hexen w/wo Sound FX Card 19:00 The Soundblaster DSP project 23:23 Removing the DSP chip 29:03 Adding a socket 32:39 Testing the card with socket 35:39 Flashing the new firmware 36:46 Testing the new firmware in Hexen 38:51 Testing the new firmware in Doom 39:52 What a result!No Drives, Just ROM: Meet ROMOS on 64KBits und Bolts2025-03-27 | Meet ROMOS, an operating system that fits snugly on a 64K EPROM chip - no hard drives or floppy disks required! In this video, we will explore how to get started with ROMOS and what we can do with it. I am curious if we can play games that are small enough to fit on a floppy disk!
ROMOS: https://rayer.g6.cz/romos/romos.htm
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The ROMOS project 00:45 Required files 01:42 Configuring ROMOS 03:49 Configuring network card 05:47 First boot 06:24 Exploring ROMOS 10:26 Winter Games 12:42 What can this be used for?Creative Ignored It: The Hanging Note Bug in DOOM & HEXEN (Part 1/2)Bits und Bolts2025-03-20 | Creative Labs never acknowledged that some of their soundcards were suffering from the Hanging Note Bug. But does that mean it doesn't exist? Well, in this video, you can hear it for yourself! I am going to test the game Hexen and DOOM and you won't believe your own ears! I am also trying to use a tool called FixMPU to mitigate the bug!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Hanging Note Bug hardware 02:02 Hexen with ESS ES1688F 03:19 Hexen with SB16 04:37 Hardware fix delayed 05:15 Hexen with FixMPU and SB16 07:17 DOOM with SB16 09:43 DOOM with FixMPU and SB16 12:08 The hardware solution teaser 12:41 Update MIDI Forge: MaestroI asked AI to find FAKE Pentiums in my CPU collection!Bits und Bolts2025-03-06 | You might have seen my previous video about the two Intel Pentium CPUs that made it into my collection. Why do I know they are fake or relabeled? Well, when you rub with IPA on them, they purple color transfers to a white cloth. I was curious if AI is capable to find the CPUs among all the other CPUs in my collection. 15 CPUs to pick from - only two are fake.
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 AI contenders 01:52 Meta AI 04:10 Microsoft CoPilot 04:46 DeepSeek 07:43 X Grok2 09:55 ChatGPT 11:32 Perplexity 14:58 Google Gemini 19:32 Microsoft CoPilot - try 2 21:40 ResultsCan you swap the BIOS with one from another board?Bits und Bolts2025-02-27 | Have you ever wondered if you can just use a BIOS from a different board on your vintage motherboards? I tried it! I am going to use six different implementations to see if I can unlock new features and more performance! The goal is to use ROM shadowing for XTIDE to load into the upper memory area.
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The board: M396F V2.6 05:50 Finding alternative BIOSes 07:48 BEK-tronic BEK-3703 12:07 Copam CEC386SX 17:36 CX Technology Inc. SXD 25:20 PCChips/Hsin Tech M396F V3.0 26:11 Pine Technology PT-319A 29:00 Microid Research Inc. MR BIOS 37:57 Benchmark results 38:09 Looking for MR BIOS filesNew method to identify Fake Intel Pentiums?Bits und Bolts2025-02-20 | If you shelled out big bucks for an Intel Pentium in the mid-90s, you probably knew exactly why it was worth the price - right? Well, maybe not! There's a chance you paid for a premium chip but walked away with a cheaper one, thanks to some crafty scammers pocketing the difference. I recently found two suspicious CPUs at the scrapyard—recoated, relabeled, and totally fake! Let’s put them under the microscope and see if we can tell the fakes from the real deal!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 My Intel Pentium Collection 04:27 My recent discovery 12:45 PCBWay 13:41 The motherboard: Gigabyte GA-5AX 16:09 Under the microscope 26:05 First fake CPU: Pentium SL283 30:55 Second fake CPU: Pentium SL293 38:52 Testing the SL283 47:29 Testing the SL293The Greatest Sound Card Ever? The iconic Sound Blaster 16!Bits und Bolts2025-02-13 | I always wanted to have a Sound Blaster 16! Finally, 30 years later, I have one! It comes from the scrapyard and doesn't work properly, but hey! It is a Sound Blaster 16! The cards suffers from excessive noise pollution. I hope we will be able to identify the problem and fix it because the card is unusable in its current condition!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The Sound Blaster 16 02:32 MC3403 Opamps 04:41 Sound samples 07:28 Oscilloscope probing 09:37 PCBWay 10:11 Swapping Opamps 13:45 Testing Opamp swap 14:30 Remove the TEA2025 amplifier 17:03 Measuring the voltage regulators 18:39 Testing the 5v regulator 25:58 Installing new regulator 29:08 TestingWhy is this keyboard not working? Find the fault on the ABIT BE6 IIBits und Bolts2025-02-06 | This is a follow-up to the ABIT BE6 II motherboard which I recently found at the scrapyard. Unfortunately, the keyboard doesn't work reliably. Today, we are going to look for clues why the keyboard seems to restart randomly.
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The keyboard issue 00:54 Looking at some chips 04:01 PS/2 keyboard connector 04:50 Tracing ground and power 06:26 Checking clock and data signal 10:36 Tracing clock and data signal 12:38 Winbond chip reflow 18:52 Winbond's little brother 24:37 Looking for clues 27:04 The loose connection 27:38 Behind the keyboard connector 36:34 Another problem 37:50 The final test 38:29 RecapHow many will work? Five retro parts found at the Scrapyard!Bits und Bolts2025-01-30 | In today's video, we will check five retro pieces I've recently picked up at the scrapyard! An ABIT BE6 II, a Hercules 3D Prophet 4000XT 64MB PCI, a Pentium III 750, a Diamond Monster Sound MX300, and an nVidia FX5700 Ultra! All of them were pulled from piles of other hardware. I will try to restore all five of them today and build a Slot 1 system to play some good old 'Unreal Tournament'.
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Showcase 05:45 ABIT BE6 II 21:15 nVidia FX5700 Ultra 30:15 3D Prophet 4000XT 64MB PCI 33:15 Diamond Monster Sound MX300 37:37 Unreal Tournament 39:20 Future workPentium III Drama: Removing, Resoldering, and Hoping for the Best!Bits und Bolts2025-01-23 | Yes! I give this Pentium III another spot on my channel. I tried to fix it before - and failed! Today, we will lift the core, clean it, and resolder the BGA chip - and then we hope for the best. To this day, nobody knows the frequency of this chip. Today we will get one last chance to reveal its secrets!
Disclaimer: I am not an expert when it comes to BGA rework, nor do I have the best equipment! But I try my best...
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The unknown Pentium III 01:18 Comparing models 06:02 My mistake 07:10 PCBWay 07:46 Pentium III 1GHz 09:57 Exchanging unknown chip 14:50 Full reballing cycle 20:05 Evaluate and assemble 21:55 Testing 24:33 Thank youReballing a Pentium IIIBits und Bolts2025-01-23 | Unknown Pentium III - maybe we can figure out what frequency it has!Cracked 3Dfx Voodoo 2 chip - Lets dig deeper!Bits und Bolts2025-01-16 | What a shame! A Diamond Monster 3D II with a cracked 3Dfx chip - the FBI chip to be precise. Today, we are going to see if this chip has survived the harsh impact that cracked the plastic body, point a thermal camera to the chip - and well - look for the etched 3Dfx logo on the die!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Today's Voodoo 2 01:51 Repairing card damage 07:10 PCBWay 07:40 Testing the broken chip 11:04 Removing the FBI chip 14:02 Kopalnioki 14:40 Solder new FBI chip 17:50 Testing the new chip 23:10 Exposing the die 30:57 3Dfx on the die 32:21 Fixing the card 34:27 GameplayHot Take: HT140 SMD Tweezers saved this Voodoo 2!Bits und Bolts2025-01-09 | The first Voodoo 2 of a pair I received from a viewer. I am using a new tool that was sent to me by SEQURE - the HT140 Hot Tweezers. They will be very helpful to harvest all those broken SMD capacitors from a donor board. And you won't believe what I have found on the second Voodoo 2!
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 First look 01:26 SEQURE HT140 unpacking 02:56 First Voodoo 2 under the microscope 05:36 Second Voodoo 2 under the microscope 13:00 Ultrasonic cleaning 13:38 HT140 stand assembly 15:28 HT140 menu and setup 19:30 Working on Voodoo 2 33:33 TestingA Music Player for Floppy Disks!Bits und Bolts2025-01-02 | The Soundbrush 55 from Roland is a MIDI player that reads files from floppy disks! A viewer owns the device - unfortunately, capacitors leaked and destroyed both motherboards inside the device! Today, we are going to restore both boards, play with a Yamaha Tone Generator - and have a brief look at what I will do in the coming videos! Happy new Year 2025 everyone!
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Unpacking 06:53 Repair auxiliary board 20:56 Yamaha Tone Generator 22:40 Repair main motherboard 34:34 The resultKeeping time on old PCs is hard! #retro #repairBits und Bolts2024-12-28 | This retro system has trouble keeping the correct time. Looks like the circuit to track time is faulty. Let's fix it!Temporal Drift: This Real-Time Clock is on FIRE!Bits und Bolts2024-12-27 | Have you ever had an issue with the time and date on your retro gear? I *had* one! The time displayed in the BIOS jumps 3 seconds for every second. In today's video, we are going to investigate and try to fix that issue.
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The Real-Time Clock issue 04:05 Board Overview 08:45 Tracing the clock signal 12:55 Speculation 13:26 Measuring with Oscilloscope 15:00 Replacing the 32.768KHz Oscillator 18:00 Replacing TC4069UBPDoes it make sense to swap those CPUs?Bits und Bolts2024-12-19 | I have this board, an M396F V2.6, which I am sure has the least components in my collection. This minimalistic board sports 6 ISA slots, 4 30-pin SIMM sockets, and a Texas Instruments TX486SLC/E CPU. Another YouTuber, K2s Retro Workshop (@DKJones96) tried this board and had issues with the 1K cache on his CPU - a clock-doubled version with 40 MHz. Today, I want to find out if I can reproduce the issues he faced and decide if I want to transplant the CPU to a board that may benefit more from the features of the TX486SLC/E.
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The MF396F V2.6 03:54 First power-on 05:55 PCBWay 06:36 Debugging 11:36 Second test 13:40 Benchmarks: Cache enabled 17:20 Benchmarks: Cache disabled 18:56 Reproduce Cache issues 20:13 The cache pins 24:41 No swap!Wait what?! XTIDE from a simple floppy disk?Bits und Bolts2024-12-16 | Do you want to use XTIDE but don't want to deal with EPROMs, ISA network cards, programmers, and memory allocation? Then you can run XTIDE simply from a floppy disk! YES! In this video, we are going to do just that!
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Recap 01:12 OPTROM loader 02:21 Prepare environment 12:45 Fix build script for Windows 13:05 Build floppy images 15:03 Copy XTIDE to floppy 16:57 Testing XTIDE from floppy 19:09 Downsides and issues 21:48 Thank youBuild your own XTIDE Universal BIOS from scratch!Bits und Bolts2024-12-12 | I finally managed to get XTIDE Universal BIOS to work on my 386 motherboard, but my mechanical drive powers down after XTIDE initializes. To solve this, all we need to do is to build XTIDE BIOS ourselves and leave out the 'Power Management' module. In this video, I'll do exactly that.
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Recap 00:54 Preparations to build XTIDE 08:34 Testing build environment 11:06 Build configuration 15:41 Build custom XTIDE 16:07 Fixing build problems in rev 629 20:04 Configure XTIDE 23:18 Testing custom build 24:32 Using a network card with jumpers 30:10 Like, Subscribe and PatreonNewbie tries XTIDE for the first time!Bits und Bolts2024-12-09 | Have you hit the 500 MB drive limit on older systems like a 386? This is due to a limitation in the BIOS. One workaround is to use a BIOS overlay provided by applications like EZ-Drive. Another solution is to use a BIOS extension called XT-IDE Universal BIOS. In today's video, I will try to use XTIDE for the first time... Watch me make every mistake possible!
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Trying a 6.4GB HDD 02:14 EZ-Drive 07:26 Get XTIDE 12:10 Configure ISA network adapter 15:26 Flash XT-IDE 17:52 XT-IDE: Test #1 19:50 XT-IDE: Test #2 22:05 XT-IDE: Test #3 24:00 Configure XTIDE 29:07 XT-IDE: Test #4 32:17 TLDW: How to create XTIDE 33:46 6.4GB HDD 34:02 Bitter sweet success 36:48 What we do in the next videoReviving a 32-Year-Old Corroded Motherboard!Bits und Bolts2024-12-05 | A scrapyard find once again! I almost left this board there due to the corrosion, but I also won't say no to a challenge from time to time. The battery leaked and destroyed traces, vias, logic chips, sockets, and pin headers. This will be a tough repair and the chances of success are slim! Let's try anyway! The board is a Biostar MB-1325/1333ACA-S.
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Inspection 03:19 PCBWay 03:57 A closer inspection 07:22 Removing keyboard connector 09:15 Removing power connector 11:26 Cleaning corroded pads 14:57 BIOTEQ chipset reflow 16:09 Via and trace repairs 20:52 Removing chips and sockets 27:05 Light through PCB 30:59 Restore connectivity 35:36 Tantalum capacitor 37:12 New copper traces 39:07 New connectors and sockets 46:53 Testing logic ICs 48:03 Final touches 51:17 First test 51:54 Tantalum again 53:11 Second test 56:15 Tests 59:46 Wolfenstein 3D 1:00:52 FastDoom 1:02:48 PatreonCan Witchery find the fault of this 3Dfx Voodoo 2?Bits und Bolts2024-11-28 | A viewer needs my help with his Voodoo 2! This card is detected under Windows, but after the driver installation, the device shows up with a yellow exclamation mark. Needless to say, no 3D application is working. Today, I will use an updated version of Witchery - the ultimate 3Dfx debugging utility for Voodoo 2 cards. Let's see if the tool can figure out what is wrong. Maksim, the autor of Witchery, also has a YouTube channel (link below).
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 A look at the Voodoo 2 00:51 Update on Witchery 03:06 Testing a working Diamond Monster 3D II 03:29 Installing the faulty Voodoo 2 05:46 Can Witchery help? 07:15 Can Mojo help? 08:12 PCBWay 08:47 Under the microscope 12:00 This resistance is wrong 22:00 A missing component 24:56 Testing the card1024K reasons to fix this Pentium Pro 1M!Bits und Bolts2024-11-21 | This CPU was sent to me by a viewer - with a warning! Bent and broken pins! Well, since this Intel Pentium Pro has a level 2 cache of 1 MB, I couldn't say no! Let's try to fix this CPU!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Unpacking 03:49 Under the microscope 09:07 Trouble with pins 13:22 Pin soldering 26:26 The fixed Pentium Pro 27:19 First test 29:11 Flashing BIOS 33:10 BIOS v18 35:10 F00F Bug in DOS 37:37 F00F Bug in Windows 98SE 39:15 Thermal images 39:44 ConclusionCan I Save This 286 Board? Testing & Socketing all 13 logic ICs!Bits und Bolts2024-11-14 | This OCTEK FOX II in revision 3.4 doesn't want to POST! It is still stuck at POST code 10. According to the manual, this is an issue with accessing the 'Base 64K Byte Memory Failure". In this video, I will desolder all logic ICs (the 74LS244s, 74LS245s, and other DIP chips), socket them and test them in my programmer. But I also got some backup! Watch until the end to give your recommendation what to do next!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Recap 03:23 PCBWay 04:23 The first chip: Hex Inverter 11:12 Chipset logic chips 14:00 Hot air to remove chips faster 16:45 Testing chips with programmer 20:59 All chips are socketed 21:55 What else we can try 23:02 My backup planEMS Memory: The clever hack for more memory in DOS!Bits und Bolts2024-11-07 | MS-DOS (probably most DOS flavors) is limited to accessing 1MB of system memory. The base memory is even less at 640K with another 384K reserved for system functions. With a clever hack, MS-DOS can access and additional 32MB! The main driver behind EMS was Lotus who was keen to get as much extra memory as possible to run large spreadsheet applications.
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 Setup with 1MB memory 02:37 8086 preview 04:33 Default memory configuration 07:40 The Elder Scrolls: Arena requires EMS 09:30 How EMS works 11:00 Turbo EMS installation 18:24 Happy days: EMS memory 21:38 Trying TES: Arena with Turbo EMS 27:50 Upgrade to 4MB 31:15 Moving the Page Frame 39:00 Replace Turbo EMS with HIMEM and EMM386 42:10 TES: Arena finally worksIs this one of the most incredible scrapyards on Earth?Bits und Bolts2024-11-06 | This is going to be very short video about four motherboards I picked up during my last trip to the scrapyard. At the end of this video, I will show you some of the things I came across during this trip to my local scrapyard!
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▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The Made in USA sticker 00:45 Board #1: Socket 2 04:19 Board #2: AMD 386 SXL-33 07:34 Board #3: Super Socket 7 08:40 Board #4: Slot A 09:55 Scrapyard impressionsUncovering the Fake Cache BIOS Mystery!Bits und Bolts2024-10-31 | Assembly language, HEX editor, checksums! This video has it all! I received enough feedback from my audience to attempt reverse-engineering the fake cache BIOS of my 486 BEK-tronic BEK-V429S motherboard. Will we be able to patch and revert the change scammers have introduced in the BIOS to always display 256K L2 cache regardless if or what cache chips are installed?
▬▬▬▬ *Timestamps* ▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 00:00 The fake cache motherboard/BIOS 02:37 Preparation 03:56 BIOS 2.01r: Find the cache calculation 10:05 BIOS 1.2: Find the cache calculation 12:29 Find the difference: 2.01r vs 1.2 16:32 BIOS 1.2: The good code 21:54 BIOS 2.01r: The bad code 27:55 Possible fixes 28:49 How to get 32MB of L2 cache 33:13 Checksum errors 36:46 Patch the BIOS code 42:00 Testing the fixed BIOS