MKHBC-8-R1 - soldering I/O Expansion Bus.
I advanced the project a bit last night and hope to finish this part over the weekend. The bus will have 4 expansion slots made of IDE sockets. I little more than a half of the pins are used for signals (8 address pins, 8 data pins, CPU bus signals), the rest are ground and one is +5V. I am thinking of changing one of the ground pins to be a 12V pin in case any expansion card needs higher than 5V voltage. The pictures below show the progress I made since last time:
|Full view of the bottom of the board.|
|Top of the board - IC and slots layout.|
Thanks for looking.