Last Updated or created 2024-02-12

(Todo : add photos/designs )

Amiga:

Action Replay II	Owned since … 80s 90s? Modded this one, as part of my modular amiga system where i wanted to remake every part onto 10×15 euro prints. So i could swap things out for other boards.
Memory expansion	512k .. missing in action Go a new one in … ?
Boot selector	Swaps df0 and df1 DIY version was a wirewrap ic socket with a cross switch, now i have a Gotek buffered switching module with can be actvated with a keystroke. (Gotek post)
Keyboard mod	Hidden key (in the space of the stands, which triggered a extra key stroke)
Kickstart selector	A print you can insert in the ROM socket of your amiga. Had only 1.2 and 1.3. Now there are many .. like diagnostic roms. I made a altered 1.2 version .. which was unusable .. i f*cked it up
SID mod	Added a sid parallel on the 8020 CIA chip
Gotek driver emulator	I made a arduino version to read disks. (Other post) But this is a disk image drive emulator. See Gotek post
Boot sector warn	Piezo beeper which warned me when a boot sector was being written (virus alert)
Sound filter fix	Amiga audio filter enhancer, using capacitors and resistors

C64:

Final Cartridge III
Led mod	Memory activation leds
KCS Power Cartridge	Sepp’s old cartridge?
Rom selector	DIY rom selector
Data Manager 2	Can’t find anything on this one on other sites !?!?! https://www.henriaanstoot.nl/2022/07/17/mystery-cartridge-c64/

Atari:

Vic-20:

Reset mod	DIY reset mod
ROM selector	DIY ROM selector
Many cartridges	Sold in 2022, kept only some useful once’s

PC:

PC speaker mod	Speaker to audio jack
Seek time monitor	When a seek took too long, LEDs would light up, time to defrag!
Covox mod	A pre sound card parallel to audio resistor bridge. Only a few demo’s and games supported this mod.
VGA to scart	Display hack

Monitor:

Monitor mod	DIY horizontal flip using relays
Color mod	Greyscale / RGB switcher

Generic:

Joystick recorder	recorded movements when playing a game, so it could replay parts.