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Board version r1

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@yottatsa yottatsa released this 06 Aug 10:13
· 17 commits to main since this release
r1
220ecc5

Configuration

  • 8MHz 8086-compatible CPU
  • 128KB low SRAM
  • 256KB EEPROM (27C020/28C020) 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

Known issues

  • 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
Assets 7
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