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tony, I would suggest any time you spend studying the Z80MC ROM, ZMCV15.asm, is time very well spent.? Josh's style is clear and readable and his comments are plentiful and excellent. Also, if you

LOL!! Thats funny. In all of Lee's designs I burnt my own eeproms from the listing on most all of Lee's sites as I was building them and downloaded them all. The VIP2K, The MC, The small MC card. This

Tony, If you look in my source code, I list the assembler I use for it.? Sadly, not all assemblers work the same.? The psuedo code is not standarized. Regards, Josh

Oh thanks Bob! Yea I will try all the ones you mentioned. I dont have any serious time limits and I love to try out all this new stuff. I will look into that the more I build my new Z80MC. Thanks a

Hi Tony, Mike Riley's RcAsm has a .def file for Z80s, so you can use that if you wish. There is an assembler called asmx (available on Herb's retrotechnology site) that can handle Z80 instructions

Hi guys, Being new to the Z80 world, is there any good recommendations of a nice assembler for this processor. I have a 6502 S-C Macro asm for my Apple2 and can run the Z80 card on it as well but I

Thanks for the pdf Lee!

Thank you for that link! Now I just need to find the archive of Popular Science magazines. Archive.org only has a few of them, though they do most of the Popular Mechanics issues into the 70's.? I do

ajparent1/kb1gmx wrote: I think the fascination for me is that I can read these old articles and *understand* them. They were written at a time when everyone was a beginner. The chips were also more

Lee, You are far from alone on that.? I have maybe a dozen boxes of those?that I've retained over the years.??They tend to reflect my interest in 8080/8085/z80 and other cpus of the day especially

Wow Allison I read your use of the z80. Its so cool to read that, as well as the fact that its still running for that processor. Im already hooked onto it. Yea I was a 6502 guy from way back and still

Dynamic ram refresh is in all the Z80 flavor s (Z80, Z180,Z280...). I have a paper done by Tim Olmstead on how to use refresh and make it work.? ?I'll have to put that in the files area. FYI the

saturn5tony via groups.io wrote: I too still have all my old Byte, Dr.Dobbs, REMark, Sextant, QST, etc. magazines, and often go on "archeological digs" for information and entertainment. I recently

Z80, Been developing and using the Z80 since I got my Northstar Z80 cpu for Altair in early 1977 at that time a 4mhz part or easily twice the 8080 speed. I have not less than... 5 Z80 s100 systems 3

Hi Lee, Wow cool list of things to keep in mind. I did not know about dyno-ram refresh ability. I am still going threw the docs and filling up my parts list for the Z80MC. Wow a really awesome design

joshbensadon via groups.io wrote: The Z80 was amazing in part because it was such an early microprocessor. It was a huge step ahead of its contemporaries (like the 8080, 6502, 6800, etc.) The others

Hi Josh (and Bill) Oh so true about looking at old Bytes and PE. I have been reading them every day for quite a few years now, as well as RE. Its fun to see where we are now compared to the late 70's,

Even if you don't have the brain power to concentrate on this stuff, the books are still fun to read as they demonstrate examples.? A few times, I would hang out with my friend Walter, and we would

You can find a lot of them as PDF files on archive.org, along with a lot of the other classic computer & programming books. Zak's, Osbourne, and others,? tech manuals from the manufacturers, etc. I

Hi Josh, I dont remember that instruction, but I know it had quite a few more that were better than the old 8080 as well as an improved register set. I know that the HW took the 3 power supplies from