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Hi Paul, There is barely enough space for the LED's they're packed in there like commuters on the 5 O'clock train! But, you can very easily alternate colours of LED's.? I'm using Red and Yellow, in

Lee,?I was very interested in the G Barrow 8080 S100 board octal display and keypad. A Google search turned up the user manual with cct and rom code.I first learnt octal coding when i worked at DEC

ajparent1/kb1gmx wrote: Yep! That's how I did it on the Altaid 8800 (an 8080 version of Membership Card) <http://www.sunrise-ev.com/8080.htm>. But that has to change to make stock versions of DDT (or

With 8080 RST7 is free (bus to 1s using pullups) if you want any other you need to assert that on the bus an octal bus driver with the inputs set to RST3 or 4 is suggested.? RST6 is also in a sorta

ajparent1/kb1gmx wrote: Yes; the blinkin-lights are an important feature of a FP. "What are all those blinking lights doing, son?" "Impressing you, dad!" A hardware front panel shouldn't have any

Yes, having A FP should be seamless, least it was on my old Altair when it behaved.? There is no reason why CP/M should not run with a FP.? Also the blinkin lights thing. The Xmodem bug,? That may

Hi, I've been going over some bugs that Bob Kircher has been encountering. There are 4 bugs identified 1. Some sort of Buffer problem (I need to dig into much earlier emails to recall this

Easier would be the smaller T-11 as its a more conventional 40pin. Allison

Paul Bigwood wrote: TBD (To Be Detirmined). But hopefully by the end of the year. :-) Price will be similar to my other little computers (1802 and Z80). Lee80 Hart -- There is a computer disease

Hi Lee,Love it.Do you have prices and availability of a kit yet?Best RegardsPaul?Sent from Samsung tablet.

All good updates! Thanks Lee! Get Outlook for iOS<https://aka.ms/o0ukef> ________________________________ Sent: Monday, November 4, 2019 8:36 PM To: [email protected] Subject: [Z8MC] Z80MC rev.BD

I recently updated the Z80 Membership Card CPU card to rev.B, and the Front Panel card to rev.D. No big changes; but here are the improvements: CPU rev.B The 5v regulator U8 has been flipped upside

timgreenowb via Groups.Io wrote: Well, there are PDP-8 and PDP-11 clone kits (google PiDP-8 or PiDP-11). They use a Raspberry Pi as their "brain", which would fit in an Altoids tin. Almost

Just joking.? I forgot to put a smiley ? on my post.? It's the chip from a DEC PDP-11 and obviously wouldn't fit in a tin.? I got the idea from

timgreenowb via Groups.Io wrote: I'm too "vintage", I guess. What's a J11? What do these two giant chips do? Josh and I have currently been working in the opposite direction. We've put an Altair 8800

Maybe Lee could do a J11 Membership Card next.

From: bill rowe <bill_rowe_ottawa@...> Hi Charles and Bill, Yes, the Z8 is a different (later) Zilog microcomputer. The Z8 was built for smaller controller applications, similar to the Intel

The Membership Card is Z80 based. Not sure why Lee went with the Z8 name originally. There is also a Z8 CPU which is more of a microcontroller. There was a BYTE project by Steve Ciarcia many years

Hi Charles. This group is centered around the Z80 Membership Card. The Z8MC was just my clumsy abbreviation. I was not aware that there was such a thing as a Z8 till yesterday. I don’t know anything

So the Z8 is *not* the Z80... and is there *any* compatibility??? This new group setup is something I wanted to try... and no one seems to be posting. So yes, I can look all this up... but I just