durgadas311's latest activity

I have an interested party planning to swing by and pick this up in a couple weeks. I will update on availability at that time. Thanks,

Note that at power on, the PIO "outputs" are programmed as inputs, and so both drive A and B LEDs should be on, and motor should be off...

Do you get the "normal" boot sign-on message, like: KAYPRO II 64k CP/M vers 2.2 A> Are you saying that you can't type on the...

I have an Apple IIgs that I need to dispose of. It is missing the keyboard and mouse, so I have not powered it on. It has three...

I also saw that in the RICM documentation, but even Wang used 74181 chips - many did. The Wang 2200 CPU uses two 74181s. I'm not aware...

My first thought is the similarity to the Wang 1200, although this one looks more modern. It would be interesting to see more of the...

There is an SEBHC google groups list that has a lot of Heath experts on it. Some watch this forum and may chime-in. Although they may...

In case it is useful to any Wang 700 restorers, I have made "the missing schematic" from the Wang 700 set: the motherboard. This...

Yes, 1978. Sorry for the mis-info.

Assuming it is the same as timestamps on CP/M-Plus (3.0) on 8-bit platforms, the first two bytes form a 16-bit integer containing the...

Looks like you have a 2/84 model, so it has a CRT controller chip that doesn't produce any video signal until the CPU runs the ROM code...

First question is whether this is a "Kaypro II" (2/83) or a model 2/84? When you say that both drives are lit up, do you mean that both...

M-80 and L-80 must be extracted from the LBR before they can be used. I thought there were tarballs of these tools out there, but can...

So, if you are looking for something that recognizes the Zilog mnemonics, you can get Microsoft's M-80 (and L-80). As you have observed...

I've also seen that same scenario. And it's also been my opinion that IBM does not really lead in technology, but to be fair I think...