Hallo allemaal, For those who are interested I attached the SCH of my DMA project as a GIF-file. The only parts in this SCH which I didn't mention are the dipswitches to connect the NMI and IRQ with any of the IRQ-lines of the PC and the 74LS125 as a special buffer. REMARK: I discovered one mistake: pin2 of U6A (125) should be attached to GND, NOT to Vcc. Sorry. Enjoy yourself :-) And now I'm going to write a PRG so I can dump the ROMs of my German 8032SK on disk for our friend Andre. I also will dump of my American 8032SK so he has something to compare with. Groetjes, Ruud PS. Do me a favour: don't write so many emails to eachother. It cost me so much time to read and answer them that I have no time left to do anything else :-)
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