A computer based on the HD6309 CPU, done for the Retro Challenge 2017/04.
KiCad Layout Assembly
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LICENCE.md
README.md

README.md

HD6309-Computer

A computer based on the HD6309 CPU, done for the Retro Challenge 2017/04.

HD6309 Computer Image HD6309 Computer Image

Read the blog: https://namoseley.wordpress.com/category/retrochallenge/

Features:

  • HD6309 CPU
    • Binary compatible to MC6809
    • ..but faster instruction execution,
    • ..extended registers,
    • ..additional instructions,
    • and lots more!
  • 1MB of RAM:
    • mapped in 32K pages at 0x0000 .. 0x7FFF
    • fixed page at 0x8000 .. 0xDFFF
  • 2KB of IO space:
    • SC16C550B UART at 0xE000
    • 8-bit expansions port at 0xE010(untested!)
  • Memory map register:
    • 5-bit entry sets A15..A19 on RAM
    • reg at address 0xE800
  • 4KB of ROM:
    • Memory check
    • SREC loader

Licence: CERN Open Hardware Licence v1.2

Development time provided by: http://www.moseleyinstruments.com