[Utility] DRAM Tester for the Sharp MZ-80A/K & MZ-1200 скачать в хорошем качестве

[Utility] DRAM Tester for the Sharp MZ-80A/K & MZ-1200

This is a short demonstration of Hlide's new excellent tool for checking the DRAM chips in your MZ machine. This test has been run on my MZ-80A. You can fetch the latest release from: https://github.com/SHARPENTIERS/MZ-80... Here is what Hlide has said about his program: test 4 (March-C, 4~1, 4~1 and 4~1) are very slow because it toggles bit after bit and twice. The garbage in the beginning is intended: when powering on, VRAM contains random characters so I keep that state about 10 seconds so we may witness the video is working. Then video is turned off and a VRAM $55/$AA is tested to determine whether VRAM is working. When video is back, intro is shown until SPACE is pressed and then the 4 DRAM tests runs forever. The topmost left counter is the test number (1 - $00/$FF, 2 - $0F/$F0, 3 - $55/$AA, 4 - March-C). the other top left counter is the DRAM row number.