Keyboard schematic diagram

incognito ergo sum (116)

03-01-2008, 16:04

Hi all! I have Yamaha YIS805 (KYBT2) computer, but without keyboard. I want make it self. Need schematic diagram. My email: BushJr(at)yandex.ru

Sorry, my english is very bad. I never learn this language...Hi all! I have Yamaha YIS805 (KYBT2) computer, but without keyboard. I want make it self. Need schematic diagram. My email: BushJr(at)yandex.ru

Sorry, my english is very bad. I never learn this language...

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Por Sonic_aka_T

Enlighted (4130)

05-01-2008, 00:03

Check the amount of pins on the mainboard. If there are like 20 pins there's a big chance it's arranged just like the keyboard matrix. In that case you can check this page and figure out the matrix... Not quite a schematic, but it may help. Good luck.

Por Jipe

Paragon (1614)

05-01-2008, 16:26

which chip MSX controler is inside your YIS805 S3527or S1985 ?
you can inspire other MSX schematic
see on Hans Otten site
S3527 on Philips NMS 8250
S1985 on Sony HB700

Por Z-man

Ambassador (0)

15-01-2008, 10:00

Chip in my computer is S1985. Keyboard connector - round, 13-pin. Thanks all, now i have all needed information.

Por JX10p

Supporter (11)

15-01-2008, 12:35

HB-F700 have 13-pin connector and S1985 chip
http://msx.retro8bits.com/msxmanuals.html