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DRAM Tester for MZ-80 K/A and MZ-1200
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@hlide hlide released this 12 Nov 17:05
· 3 commits to master since this release
v2.3.0
6daa45d
  • 8255 is now initialized properly.
  • garbage display at power-up remains visible during 10s to witness CGROM is good visually.
  • then video is set off to test VRAM between $D000 and $D7FF with pattern $55/$AA.
  • if VRAM test is failure, a repetitive beep is issued and led toggles green to red and vice-versa.
  • if VRAM test is successful, then it is okay to use VRAM as stack and draw intro.
  • intro offers to start all DRAM tests by pressing [SPACE]
  • there are 4 tests: 1) pattern $00/$FF R/W, 2) pattern $0F/$F0 R/W, 3) pattern $55/$AA R/W, 4) March-C.
Assets 3
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