Re: [M100] Switchable clock doubler schematic

2023-05-14 Thread Philip Avery
Phew, ChatGPT - sounds like a challenge! Well, with REXCPM offering 4MB of RAM...  we could have 4MB of optimized 8085 code! Would that do it :-) In all seriousness Steve, no nothing specifically in mind, just interested. I guess the std keyboard polling & auto-repeat speed on M100 is quite

Re: [M100] Switchable clock doubler schematic

2023-05-14 Thread Kenneth Pettit
On 5/14/23 6:09 PM, Stephen Adolph wrote: Hi Philip, It does work with both REX flavors, yes. Yes the keyboard is polled more frequently, but I have not seen a problem with that.  Did you have something in mind? Probably ChatGPT on the M100 or something.  :-) Ken

Re: [M100] Switchable clock doubler schematic

2023-05-14 Thread Stephen Adolph
Hi Philip, It does work with both REX flavors, yes. Yes the keyboard is polled more frequently, but I have not seen a problem with that. Did you have something in mind? On Sun, May 14, 2023 at 3:34 PM Philip Avery wrote: > Sounds great Steve. Will it work fine with Rex # & REXCPM? Also, the

Re: [M100] Switchable clock doubler schematic

2023-05-14 Thread Philip Avery
Sounds great Steve. Will it work fine with Rex # & REXCPM? Also, the keyboard would be accessed faster would it not? Does that cause a problem? Philip On 14/05/2023 1:51 am, Stephen Adolph wrote: I continue to hack away at making an easy to install clock doubler board for Model T computers. I

Re: [M100] Switchable clock doubler schematic

2023-05-13 Thread John R. Hogerhuis
Definitely pushing the limits of our old hardware! Great stuff. As to software incompatibilities I think if the ROM and TS-DOS timing loops were fixed that covers most of what we do. One of these days I'd love to see a demo of it. Installing such a board myself seems unlikely. Just this week I

[M100] Switchable clock doubler schematic

2023-05-13 Thread Stephen Adolph
I continue to hack away at making an easy to install clock doubler board for Model T computers. I realize that modifying hardware is not of interest to most, but I spend a lot of time on it myself. The point of the activity is to allow the user to switch from nominal 2.5MHz operation to 2x or