Buying FAKE AliExpress EPROMS & Building an Epyx FastLoad Cartridge anyway! @MarkFixesStuff
Buying FAKE AliExpress EPROMS & Building an Epyx FastLoad Cartridge anyway!  @MarkFixesStuff
Uploaded April 2021 | Updated September 2026, 3 weeks ago
This video is kindly sponsored by PCBWay - PCBWay.com and we're making an Epyx FastLoad Cartridge for the Commodore 64 8 bit microcomputer!

We do a full build of the project from PCBWay, including EPROM programming with my Minipro. We discover that the EPROMs I was sold by AliExpress are fake chips, having been skimmed and remarked by the seller, so we find a way around that issue. Finally we perform a Speed Test between an SD2IEC with and without the Epyx Fastload cartridge and see if it makes a difference!

PLEASE HELP MARK FIXES STUFF SURVIVE: Due to "The Event" my livelihood vanished in a puff of smoke. If you can spare some change to help support the channel it is really appreciated and even the smallest pledge goes a long way in helping make more content and feed my cats (and children). Visit patreon.com/markfixesstuff for more info about Patreon Benefits!

00:00 - Why we're building the Epyx FastLoad Cartridge.
00:23 - Mark Fixes Stuff Intro Titles.
00:29 - PCBWay Sponsor Segment
00:43 - Soldering Iron Settings and PCB Cleaning with Isopropanol Alcohol.
01:11 - Fitting the DIP/DIL Chip sockets.
02:44 - Capilliary action in Soldering.
03:37 - How soldering flux works.
03:59 - Passive Components.
04:31 - Tantalum Capacitor Installation Polarity.
03:02 - Eye Protection Warning for clipping leads.
05:43 - Adding a reset swich to the Commodore 64.
06:04 - Warning about getting BlueTack hot during soldering and solution.
06:50 - Post Soldering PCB Flux Cleaning.
07:21 - Shoutout to Patreon Patron Jon Harris.
07:29 - Installing the 74LS07 Hex Buffer chip.
07:57 - Programming an EPROM with the Minipro USB Programmer.
08:51 - Discovering the EPROM has been faked or re-marked.
08:31 - Searching for the solution to the mystery remarked EPROMs.
09:44 - Finding the real information on the remarked chips from AliExpress.
10:08 - Programming the EPROM with the correct information.
12:05 - Installing the programmed EPROM in the EPYX FastLoad Cartridge.
12:41 - The finished EPYX FastLoad ready for speed testing with an SD2IEC.
13:36 - SD2IEC loading speed test without the EPYX FastLoad cart.
14:42 - SD2IEC loading speed test withthe EPYX FastLoad cart installed.
13:38 - Covering the quartz UV erasure window and community question.
15:52 - Patreon thanks and how you can help the channel.
16:04 - Viewer thanks, end card and more videos!

PCBWay Project Link (Not Affliate): pcbway.com/project/shareproject/C64_EPYX_FASTLOAD_CARTRIDGE_1.html - PCBWay give 10% of sales to the project designer.

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#Commodore #C64 #Cartridge
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Buying FAKE AliExpress EPROMS & Building an Epyx FastLoad Cartridge anyway!

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