leadedsolderJan 24, 2024
Kermit finally boots on the Sanyo MBC-555. This took a lot of disk finagling and understanding of the guts to pull off, so now I can test my homemade serial card. #retrocomputing #retrocomputer #sanyo #mbc555 #msdos
leadedsolderJan 21, 2024
Finally got the single-sided #Sanyo MBC-555 to boot MSDOS v2.11, which normally needs a two-sided floppy drive. Next step is to get Kermit on this machine so I can test the serial card I just made for it!

#rs232 #sanyo #mbc550 #mbc555 #retrocomputing #retrocomputers #8088 #kicad
Leaded SolderJan 9, 2024

I spent a lot of time crimping IDC cables today to finish building my boards. One adapter for the PC-8001 to use floppy drives, and another for the Sanyo MBC-555 to speak RS-232.

Both these boards are going to be open source: let me know if you have either of these machines and I'll send you a spare board if these end up working out when I test them.

#rs232 #retrocomputing #retrocomputers #retrocomputer #sanyo #nec #pc8001 #pc8033 #pc8031 #pc80s31 #mbc550 #mbc555 #sanyombc #floppies #kicad

Leaded SolderNov 24, 2023
Started making a clone serial adapter board for my #Sanyo MBC-555. Unfortunately, the ribbon cable I cut was a little bit too short to reach the connector on the motherboard. What's the old adage? Measure once, cut three or four times? #retrocomputing #retrocomputer #mbc555 #mbc550 #rs232
leadedsolderOct 18, 2023
We're getting just that little bit closer to a working open-source RS-232 card for the Sanyo MBC-555. Parts right now are all salvaged from a battery-doomed Hitachi PC, so a small salve on that wound as well.

Just need to build a ribbon cable, and then I can start testing. Uh, that is, if I find some software that uses a serial port for this computer.

#retrocomputing #kicad #rs232 #retrocomputer #sanyo #mbc550 #mbc555
leadedsolderFeb 8, 2023
I'm doing a poll about which #retrocomputing system to make a replica of next, and made that poll public. Please vote even if you are not a patron!

Candidates are, in order of most to least votes so far: Galaxian arcade hardware, SWTPC 6800, and the Tomy Pyuuta/Tutor.

https://www.patreon.com/posts/clonefest-2023-78367003

#galaxian #sanyo #mbc555 #tomy #tomytutor #swtpc