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README.md

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80188 single board modular computer

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