The Museum of HP Calculators
HP Forum Archive 15
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|82143A printer VASM listing?|
Message #1 Posted by Eric Smith on 10 June 2005, 11:35 p.m.
Does anyone have an 82143A printer VASM listing? Was one ever made available to PPC, CHHU, or anyone else? The HP-IL module VASM listings are available, but I want to simulate the 82143A as it should be simpler. I've got it partially working now, but there are some details of how the buffer is managed and how status is reported that aren't completely obvious.
If there is a VASM listing, it might tell me the sort of things I want to know. Certainly I can disassemble the ROM myself, but it will take a lot longer to figure it out. I'm hoping to avoid dumping and disassembling the firmware in the MK3870 microcontroller in the printer itself, though if all else fails I can do that.
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