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Blog: http://www.breakintoprogram.co.uk YouTube: https://www.youtube.com/BreakIntoProgram Ko-fi: https://ko-fi.com/breakintoprogram Software developer & electronics dabbler. Restoring & programming vintage computers from Acorn Atom to ZX81.
L Break Into Program
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The main bugs were that I needed to pull the MIC line low on port 254 after loading the data block. Oh, and I’d turned the Spectrum into a nine-bit computer. Was doing an additional loop on the bit counter when sending data to the port from my loader. Sigh.
Remembering the time Tim Follin doodled an excellent Tom Baker era Doctor Who logo in pencil, but misspelt it Doctor Woh.
Forgot to post this last night. Fixed the Z80 emulation so that it calculates opcode T-states correctly. Then fixed the loader so it takes those into account for its timing. There were a couple of additional bugs in the loader that prevented it from working, so fixed those and…