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SC131 z180 computer Screen shots for the system booting and menues along the way. Z180 cpu at 18.432mhz 512K EEROM 512K RAM 2 serial lines to 115Kbaud. uSD interface and device.? (sliced into eight

For fun I got a new machine to play with... It replaces (I still use it) my YASZBC (Yet Another Z80 Single Board Computer) with was a Z180 with 256K and 8K of eprom, and 765 FDC. The latest is Z180

FYI: TRS80 M100 slab is 80C85...? LCD display and typical unit has 8k to 32K of ram. Mine have been upped to 32K. Those ran on penlite (AA) cells! I tend up lump 8080, 8085, NSC800 and the whole

Shot of my Vt320 screen, KB is out of field. Z80 amproLB+ with SCSI disk 45mb running CP/M. Its to the left of the I7 Laptop running Linux.

Mine do.? Running CP/M on multiple machines allowed me the opportunity to amass a lot of software and the WC-CDrom assured I'd have what I needed. Generally I use a lot of stuff that source was

Your ref to the Kaypro triggered a lot of memories from that era. I had built, in late 70's, a Big Board system at home, added a pair of 8" FDDs (very $$$, even used!), and did a lot of early work

I have to admit I have a few favorite machines: AmproLB+ that is the version that can support SCSI and mine does a fugitsu 45mb partitioned as 5 8mb drive and a 5mb drive the software BIOS was modded

CPM/86 ... It never made it past 386 machine with a meg of ram.? There was concurrent CP/M but it was unrecognizable as CP/M.? There are sources in C for the brave. However those sources needed a

Not at my end, as my life seems to want to get and stay a bit complicated. I unloaded all my Z80 systems about 30 years ago. Except a Z80a cpu and some odd & ends of support chips, including a

I would say yes, just a little.

There was! there also was a huge setup at Free Play Florida in Lakeland.. and again there will be some at This years shows! I plan on bringing out stuff to FPF 2024, I help organize MFO, so can't

I did and still do a lot of engineering as well as hobby with Z80. That ranges from 1977 z80 in S100 through a recent project using Z280. Even ordered a SC131 SB180 to play with as I'm a long time

Partial list of what I have in systems..? I left out the PDP-8/PDP11/MicroVAX section. CPM speaking machines: ====================== S100 subgroup ------------- Altair8800(pre-A) Built jan 1975

Take care with reset as it has to be held for a minimum time. Also when stopping clock I think it has to be stopped with clock high. also are you saying single step as in slingle clock cycle or

I live in Tampa Bay, and here is a small list of what i own ( listed on my Twitch Channel that I Stream retro Repairs from ) Commodore Pet Commodore VIC-20 Commodore C64 Commodore C128 Amiga

William, Thanks for the update. I didn't think that were active groups in Central Florida though Tampa is a little far away for me. https://www.facebook.com/FloridaRetro/ I still have an Health

David, there is a small setup of retro computers this year at the faire, most are members of the central Florida and Florida Retro Computer Clubs There is also another event coming up in 2 weeks at

I hope to get to this event tomorrow: https://www.makerfaireorlando.com/ Can not tell if there a a retro-computer groups this year. Any one still playing with this stuff? regards, David

Well I may have spoken too soon.? I was testing with the clock frequency low-ish.? I turned it up? to 500kHz and now it works after a reset.? Next I need to create a power on reset circuit.

Good news, the IOREQ line on my Z80 is functional.? I had two data bus lines that were swapped resulting in the instruction not arriving at the CPU as the OUT instruction.? Now the only issue I'm