bitfixerBack on YouTube after a long time! I'm building a new retro-style computer, using an Espressif ESP32-S3. This is Part 1 of the development diary, where I write a VGA library for the S3 using its RGB LCD driver. Hope you enjoy it.
Building a New Retro Computer - Part 1: VGA on the ESP32-S3bitfixer2023-06-30 | Back on YouTube after a long time! I'm building a new retro-style computer, using an Espressif ESP32-S3. This is Part 1 of the development diary, where I write a VGA library for the S3 using its RGB LCD driver. Hope you enjoy it.
My VGA Driver: github.com/bitfixer/esp32s3vgaCompact Mac Repair Update: 3D Printed Floppy Drive Eject Gear Replacement (Mac 512k, Macintosh Plus)bitfixer2023-12-20 | Update for the Compact Mac Repair: Replacing the destroyed floppy drive eject gear with a 3d printed replacement.
3D Printed Eject Gear for Mac floppy drive: ebay.com/itm/235092616547Holiday Special! Can We Fix These Mystery Compact Macs? Macintosh 512k and Macintosh Plusbitfixer2023-12-16 | #vintagecomputer #mac #macintosh This video is supported by PCBWay! Check out the Xmas sale until Dec 31, up to 50% off at pcbway.com.
Can we fix these two broken compact macs? Got a Macintosh 512k and a Macintosh Plus locally and I know nothing about them, other than the fact that they're not working.
3D Model for Sony 800k Floppy Drive Eject Gear: thingiverse.com/thing:4167139Building a New Retro Computer Part 3: I2S Audio on the ESP32-S3bitfixer2023-12-05 | I'm adding audio capability to the ESP32-S3 using an external I2S DAC. Connect up the chip, write some code to initialize and play a sound, then do some simple sound synthesis.
PCM5102A Breakout Board: amazon.com/dp/B09C5QX228Building a New Retro Computer - Part 2: USB Keyboard and CPU on the ESP32-S3bitfixer2023-11-09 | This time, we add a USB Keyboard to an ESP32-S3 using its USB host mode, and try out a couple of emulated 8-bit CPUs, adding emulators for a Digital Group Z-80 system and a Commodore PET with a 6502.
ESP32-S3 Development Board: amazon.com/gp/product/B0BX31WGQGCalifornia Extreme 2023 Arcade and Pinball Expobitfixer2023-09-23 | Visiting the California Extreme Arcade and Pinball Expo! Here's about 20 minutes of genuine arcade ambiance with no talking or music. Hope you enjoy it.Repairing a TRS-80 Model 1 with help from the ROMulator: #SepTandybitfixer2022-09-18 | #septandy #trs80 #vintagecomputer #tandy #z80 #romulator This episode is supported by PCBWay, check out pcbway.com for PCB fabrication, 3D Printing, and much more.
For #septandy: Trying to get my TRS-80 Model 1 working! It has multiple faults including display issues and something wrong with the ROM. With help from the ROMulator Z80, let's debug the problems with this machine.
KiCad files and gerbers for the character generator adapter PCB shown in the video are here: github.com/bitfixer/pcb/tree/main/mcm6670_to_epromBits and Bytes from Vintage Computer Festival West 2022bitfixer2022-08-12 | #vintagecomputer #vcf A look at some of the exhibits and exhibitors from VCF West 2022, Aug 6-7 at the Computer History Museum in Mountain View, CA
0:36 - Chuck Hutchins' pets 1:15 - cocovga 3:44 - Amiga a4091 project 5:55 - C64i - Commodore 64 Improved 6:37 - Prodigy Reloaded 8:29 - Commodore 64 40th Anniversary 10:55 - Commodore 8-bit/Amiga 12:06 - ROMulator and PETpix 12:38 - 8080 Triton Computer 12:57 - Analog Equipment 13:06 - Heathkit H8 13:25 - Radio Shack Micros and Cousins 13:48 - The First Apple 1 14:02 - Apple II #10 14:14 - Apple Prototype Board 14:15 - Bill Gates Tandy 100 14:18 - Quapple 6502 board for PC 14:31 - Computers from Japan 15:03 - British Micros with Econet 15:12 - Bad Apple with Teletext 15:27 - Cleanup
PETpix is a way to play video on your Commodore PET. Since PETs cannot normally display bitmapped graphics, the way to do this is to take 8x8 chunks from an original image and match to whatever PETscii character the computer can display. See how PETpix works and check out the repository to make one for yourself.
Order a PETpix board from me (soon): bitfixer.com/petpixROMulator Z80 Release! Using it to diagnose a TRS-80 Model 1, and new ROMulator announcements.bitfixer2022-06-24 | #trs80 #z80 #romulator #fpga This episode is supported by PCBWay, check out pcbway.com for PCB fabrication, 3D Printing, and much more.
The ROMulator Z80 is now available! In small quantities for now, more coming soon. I use it to diagnose some issues on a TRS-80 Model 1 I've had around for years, but have never actually done anything with. Stay until the end for some new ROMulator announcements.
ROMulator Z80: bitfixer.com/romulator-z80 ROMulator 6502: bitfixer.com/romulatorRepairing my Commodore PET 8032 with a video problembitfixer2022-06-14 | #commodore #6502 #vintagecomputer My trusted Commodore PET 8032 developed a video issue while in storage over the last few months. Can we fix it?
My Website: bitfixer.comA $1 Sony Vaio, and a 486SX Laptop from 1994bitfixer2022-06-09 | #vintagecomputer #windows98 #vaio #canon Exploring two PC laptops from the mid to late 90s - or possibly early 2000s. Taking a look at a Canon Innovabook 10C, and a Sony Vaio PCG-F430. Let's clean them up and install solid state drives for that 90s experience, but better!
My website: bitfixer.comROMulator Z80 - Its back! Does it work?bitfixer2022-05-26 | #z80 #romulator #vintagecomputer #fpga #zx81 #digitalgroup Trying out the newest boards for the ROMulator Z80 (RAM/ROM replacement and debug device) on the Timex Sinclair 1000 and another mystery Z80 machine! Will it work? This episode sponsored by PCBWay: pcbway.com
See Adrian Black's videos using the ROMulator 6502 on a VIC-20 and PET: youtu.be/wamgUxN1z6o youtu.be/NH6BW5TLOqsBad Boards or Bugs? Finding the problem - and making the ROMulator easier to use.bitfixer2022-05-14 | #romulator #fpga #vintagecomputer #6502 #z80 I got a bunch of new FPGA boards for the ROMulator - but there's a problem. Is it something wrong with the boards, or can it be fixed in software? Also, a new way to program the ROMulator which should make it easier to use.
web application for romulator programming: http://bitfixer.com/romulator-buildROMulator Z80 - First Test!bitfixer2022-04-30 | #romulator #z80 #vintagecomputer First test of a project that I've had in the works for a while now - the ROMulator Z80! Testing out some basic features on a Timex Sinclair 1000 with a Z80 processor. More information at: bitfixer.com
If you haven't seen them yet, check out Adrian Black's videos using the ROMulator 6502: youtu.be/wamgUxN1z6o youtu.be/NH6BW5TLOqs#DGAPRIL - 2022 software on a 1978 digital group computerbitfixer2022-04-20 | #vintagecomputer #DGAPRIL #digitalgroup Looking at software and storage devices for the digital group, a digital group emulator, and some new digital group software!PETdisk MAX v2: Assembly and Operationbitfixer2022-04-07 | #commodore #petdisk
The new version of the PETdisk MAX is here! It's an SD card and WiFi storage device for the Commodore PET. Here's how to assemble and use it.
GitHub repo: github.com/bitfixer/petdisk-max#DGAPRIL Part 1 - A first look at the digital groupbitfixer2022-04-01 | #dgapril #thedigitalgroup #vintagecomputers
If you're into vintage computers on YouTube, you have probably heard of #doscember or #marchintosh - but I know you haven't heard of #dgapril! That's because I just made it up, literally right now. This month we celebrate the digital group (all lowercase), one of my favorite computers from the 70s and a model that doesn't get talked about enough in the vintage computer world. Here's a first look at the digital group.New Features for the ROMulator!bitfixer2022-03-24 | Raspberry Pis are out of stock everywhere these days. Now you can program and debug with your ROMulator without one.
Adrian Black's video using the ROMulator on a PET 4016: youtu.be/NH6BW5TLOqsNew ROMulator Feature - External Virtual Display!bitfixer2021-11-14 | Demo of a recently added feature - an external virtual display using dual-ported RAM on the ROMulator FPGA and a web server running on a connected Raspberry Pi. Now it's possible to read specified sections of RAM without halting, while the 6502 CPU continues to run. More information at: bitfixer.com/romulator github.com/bitfixer/bf-romulatorPETdisk MAX Kit Assemblybitfixer2021-11-12 | Assembly guide for the PETdisk MAX kit. More information at: bitfixer.com Also see the PETdisk MAX github repo here: github.com/bitfixer/petdisk-maxCommodore PET HDMI Out with RGBtoHDMIbitfixer2021-08-24 | I did some experiments using a PET 2001-N with an RGBtoHDMI to get HDMI video out, so I wouldn't have to strain the CRT with repeated use during testing of other devices.ROMulator Kit Assemblybitfixer2021-08-21 | How to assemble the ROMulator kit. More information at: bitfixer.com/romulatorFixing Jeffs Commodore PET 2001-N with help from the ROMulator (HD)bitfixer2021-06-13 | I'm trying to fix a PET 2001-N with some strange symptoms. It runs for a while, sometimes, and freezes or garbage shows up on the screen. Hopefully a gadget I built called the ROMulator will help.