80188 single board modular computer

• testing and firmware development: r1
• hardware development: r2
  • CPU card
  • ISP interface

To emulate

make run

To program and connect

make all
minipro -p SST39SF020A@PLCC32 --write fw/fw.bin
minipro -p ... --write gal/....pld
...
picocom -q --baud 9600 --imap lfcrlf --omap crlf [serial device]

Configuration

• 8MHz 8086-compatible CPU
• 128KB low SRAM
• 256KB EEPROM (27C020) or Flash (SST39SF020) with in-system programming and software programming capabilities
• PC/104-compatible with 8-bit ISA bus
  • 80188 Timer A is routed to OSC
• Dual channel 16550-compatible UART
  • FTDI USB-Serial/6-pin connector on port A
  • 5V 9pin connector on port B
• AT-compatible RTC

Notes

r1

• minor: SYSBUS socket is too close to the CPU socket and can'tbe used with the wide connector
• minor: 16V8 /OE and GND pin names were swapped
• minor: UART1 labels are wrong
• major: 74x573 OE should be /OE
• major: 16V8 /RESET can't be used as input
• major: PLCC sockets are unreliable
• unknown: 22V10 Verification failed at address 0x16C5: File=0x01, Device=0x00
• feature: added in-system programming
• major: 39x flash doesn't work as /PGM is floating

r0

• major: PCB socket is unreliable