On Tue, 25 Oct 2022, Steve Lewis wrote:
Christian! I tried contacting you a few months ago. Apologies, I suspect some intermediate ISP may be blocking gmail? I've seen this happen with other contacts.
Oh my, yes I have some mail chaos on my system and I guess yours must have been "lost" somewhere. I need to dig through my pile....
Alfred Arnold made the changes to Macro AS himself, and he used both yours and the IBM mnemonics since there were no conflicts.
Perfect! I didn't know that.
And now, I think it's time for a "Bad Apple" style demoscene for the 5100 (as one was made for the 5150), before its 50th in 2025. Let's see what some raw PALM can do.
Hehe, this sounds like a great idea! Did I send you my Kermit implementation or my Infocom V2 interpreter?
Quick question, Christian were you aware of the microcode Appendix C in the original IBM 5100 MIM? I'd assume Yes - but it's something I've always been curious about, if that appendix had ever helped you at all, or if it was too lacking in details? That Appendix C got removed for the 5110 (which has the same Processor/Controller). I'd assume you alway had access to the 5100 manuals, not just the 5110's.
Yes I'm aware of that. But I noticed that there are significant differences between the 5100 and the 5110 concerning the different ROS and the I/O functions like switching between ROS/RWS or controlling the display adapter. At the time when I reverse-engineered the 5110 I didn't have access to the 5100 docs, though, only to some copies of IBM internal papers (on my 5110 site).
Christian
