- #Imsai 8080 emulator windows serial#
- #Imsai 8080 emulator windows upgrade#
- #Imsai 8080 emulator windows Pc#
#Imsai 8080 emulator windows serial#
Im using the Altair 8800 Pro serial port and have that DB9 port set up as 2SIO Serial (pin A6/A7), 9600, 8N1, and Im running the latest CP/M by Mike Douglas on HDSK03.DSK (which is patched for serial ports). I joined a couple of forums and Facebook groups and long story short, I was told about this really great Arduino-based IMSAI 8080 replica kit from It is running an Arduino-based micro-controller and running an emulator based on the z80pack emulation software. I can connect Chris Altair 8800 to Davids IMSAI 8080 via a straight through serial cable (not a null modem cable as I would have guessed).
#Imsai 8080 emulator windows Pc#
When the IBM PC came along, all of a sudden there were (de facto) standards, bad ones perhaps, but standards nonetheless. So I set out to determine how realistic this idea was. The biggest problem of CP/M was the lack of standards for things like terminals and floppy disks. The default CPU speed for the Altair and IMSAI emulations is 2 MHz: and for the Cromemco emulation 4 Mhz, as with the original machines. Email to friends share on facebook - opens in a new window or tab share on.
The Altair emulation: comes with 2D model only. Text assembly z80 8080 projects (6) emulation 8080 projects (6) c emulator. It meant you could run larger programs before having to resort to tricky techniques like overlays. Running the Altair emulation is the same, just change to directory /z80pack-x.y/altairsim and run program altairsim. With CP/M 2.2 the operating system occupied a significant portion of the address space (maybe 12 Kb) but CP/M 3 gave 10 Kb of that back by keeping most of the operating system in an alternate memory bank.
#Imsai 8080 emulator windows upgrade#
I had one customer running his inventory control and billng systems on a CP/M 2.2 system (not the Imsai) with a 5 Mb hard drive! Businesses do not need colour graphics and sound so these systems worked very well.ĬP/M 3 was a significant upgrade if you had hardware capable of bank switching. You could do a lot with a 4 MHz processor and 64 Kb of RAM but it could be tricky. In a former life (actually two lifetimes ago) I had an Imsai 8080 chassis but the CPU board was from California Computer Systems and it was fitted with a Z80. Possible? I do wonder, given the sheer stoneageness of the machines it was first coded for… Mind you that’s maybe unkind given that the Imsai had one of the few home-user CPUs actually weedier than the Z80 😉 That said, I’m ALL about the 16 bit micros (though it’s not enough to even drive the display I’m using now, you can get a lot done in 1mb and 8mhz / half a MIPS), and if this link had been the opposite of what it is (and therefore what I was googling for) it would be epic …. Or in this case it seems, tried to do anything useful with it at all other than make an LED flash in sequence, which is the sort of thing that toy circuit boards were more than capable of in my youth (and i’m pushing 30 these days :p)
Or you tried to enter data equivalent to more than four or five screenfuls of text on a modern display (or a couple of 256-colour icons). til someone walking past the table jostled the RAM pack with the vibration of their clunking feet and it all died.
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