Maya Saura 2 

@[email protected]
112 Followers
28 Following
46 Posts

my account dedicated to old computers repairs and analog video shenanigans

my specific interests include:
- bitmap typography and graphic design
- the history of user interfaces
- analog television and phone systems (i live in the country of minitel, sécam and péritel)

my collection include:
- 8-bit: zx81, sega master system, gameboy
- 16-bit: cpc6128, c64, amiga cdtv
- 32-bit: a lot of pc from 486 to p4, sega dreamcast, 68020 accelerated macintosh se, lc, lc475, g3

Website (in french)http://maya.sh
Show threadMaya Saura 2 1d ago
@chatkipete c'est une disquette miniature :p @MichelPatrice
Show threadMaya Saura 2 2d ago
@MichelPatrice @chatkipete une micro-SD géante 
Maya Saura 2 2d ago
the debug post card has the size of a floppy!
Show threadMaya Saura 2 3d ago
@VioB oui normalent quoient on met le clavier PS2 et la manette PS2 sur la console PS2 
Show threadMaya Saura 2 3d ago
@missbullitt je te remercie mais j'en ai déjà un !!
Maya Saura 2 4d ago
I found a PS/2 keyboard for my PC! It’s a weird Alcatel MF-II K6356 (exist also with Acer branding). It has Acer-Alps hybrid weird switches with a tactile feeling, it’s satisfying but very light at touch compared to my Apple keyboards with beige or salmon switches. The keyboard itself is light compared to an AEK or Model M. (It’s comparable to an M2.) The box has the date code 06/11/95 but the keyboard don’t have the Windows key.
Show threadMaya Saura 2 May 8
@vga256 yes! we often forgot that there was a lot of awful hardware in the 90s 😂
Maya Saura 2 May 8

me, seeing a cheap isa sound card on the local craigslist: - "i wonder if this mega3Dsound2000 chip is good 🤔"

thread on vogons: "worst sound cards of all time!! number one: the mega3Dsound2000 🤢" "yeah it sounds like crap it’s worse than the mwave or even pcspeaker 😡", "i bought one to burn it in my backyard 😂"

Maya Saura 2 May 4

i learned it's possible to use a 3com ethernet card to flash rom chips up to 128KB

https://www.flashrom.org/classic_cli_manpage.html#nic3com-programmer

Manual page — flashrom v1.8.0-devel (git:v1.7.0-35-g17a63f78) documentation

Maya Saura 2 Apr 23

it's the creative ct6950 variant

the graphic card works only in the bios and in dos:
- when trying to boot windows, i only have a blinking cursor
- vmtce crashes the computer
- checkit vram test shows multiple errors (but the graphic mode test patterns are fine)

also:
- the video bios display a text screen at boot
- there is no graphic corruption

after replacing the 70W PSU of the computer by a 300W one from another computer i have this behavior:
- windows still don't boot
- vmtce crashes with an error message related to memory and returns to dos prompt
- checkit vram test still shows errors but less

after using the 300W PSU only for the motherboard and using the 70W one for the hard drive i have this behavior:
- windows try to boot but fails saying some file is missing (it's not true)
- vmtce works and can test vram (no error)
- checkit vram test is now good

i measured the voltage on one of the 2 regulators on the board (RC1587M), it receives a 3V input and outputs 1.5V  ; there is another regulator that i did not test (AMS1505)

after that i desoldered the electrolytic capacitors: the 2 big 330uF are good (measured 360~) but the others (6x10uF and 3x22uF) are all bad