Search found 36 matches

by hth313
Thu Oct 22, 2020 9:06 pm
Forum: Feature suggestions
Topic: Conflicting XROM numbers / ROM map / AMC OS/X
Replies: 15
Views: 872

Re: Conflicting XROM numbers / ROM map / AMC OS/X

While it is nice that is says DUP XROM, or that there is a feature to check this on request, I think that stating that the configuration is bad to be incorrect. The HP-41 OS has been written with duplicate XROMs in mind. It is allowed to do this and it will attempt to do the best it can with the sit...
by hth313
Wed Oct 21, 2020 6:39 pm
Forum: Feature suggestions
Topic: RAM in the 400-FFF range possible?
Replies: 10
Views: 622

Re: RAM in the 400-FFF range possible?

Adding RAM is hardly a major undertaking. I did it in my simulator and it did not take long as it was just a minor adjustment to the RAM allocation rules. In total the cost for me a couple of hours, but that is because I tested it, made it configurable and documented it. I used it to test the change...
by hth313
Tue Oct 20, 2020 7:30 pm
Forum: Feature suggestions
Topic: Scrolling CAT listings anyone?
Replies: 29
Views: 1599

Re: Scrolling CAT listings anyone?

As this is locked source I have no idea how it works internally, but this my first idea on how I would implement it. I have implemented a couple of catalogs in the past and even made a framework for it in the OS4 module (which I might dive back into at some point in the future). One way to do this w...
by hth313
Mon Oct 19, 2020 9:55 pm
Forum: Feature suggestions
Topic: RAM in the 400-FFF range possible?
Replies: 10
Views: 622

Re: RAM in the 400-FFF range possible?

Put another way, having a larger extended memory is like having a small HP-IL mass storage built-in. You can store your files in it, just like you did on your cassette drive, but instead it would be built into the calculator. Yes, it will only be about 20K, not 130K, but it is still a decent amount ...
by hth313
Mon Oct 19, 2020 9:46 pm
Forum: Feature suggestions
Topic: RAM in the 400-FFF range possible?
Replies: 10
Views: 622

Re: RAM in the 400-FFF range possible?

The main use-case would be to allow more data registers than is possible today. Data files in Extended memory can be used as direct addressed registers using XRCL/XSTO in the Boost module. Sure, back in the days I only had 124 registers of extended memory and I could survive with it even though I ha...
by hth313
Mon Oct 19, 2020 7:03 pm
Forum: DM41X
Topic: Page 6 and page 7 compatible roms?
Replies: 4
Views: 331

Re: Page 6 and page 7 compatible roms?

Ladybug should work in page 7 (but not page 6). I left a NOP in the crucial position (xCDD), not sure if I ever tested it though.
by hth313
Mon Oct 19, 2020 6:45 pm
Forum: Feature suggestions
Topic: RAM in the 400-FFF range possible?
Replies: 10
Views: 622

Re: RAM in the 400-FFF range possible?

I am thinking of the RAM area that holds user programs, data registers, status registers, extended memory, not the plug-in ROM area. The ROM pages are addressed 0000-FFFF. RAM is normally 000-3FF (with some gaps). The RAM addressing can be done beyond, typically up to FFF by using all bits in the 12...
by hth313
Mon Oct 19, 2020 7:31 am
Forum: Feature suggestions
Topic: RAM in the 400-FFF range possible?
Replies: 10
Views: 622

RAM in the 400-FFF range possible?

Is it possible to configure the DM41X to have RAM registers above the extended memory, at address 400 to FFF hex?
by hth313
Fri Mar 20, 2020 6:30 pm
Forum: DM41X
Topic: MOD File definition
Replies: 2
Views: 324

Re: MOD File definition

I use some of the hardware field in my Nut debugger. The debugger consults the loaded module files to see what hardware should be enabled. At least this is done for the timer chip and RAM. Some additional 41CL related stuff are enabled using command line option (extended RAM and NEWT CPU). Such supp...
by hth313
Thu Feb 20, 2020 8:52 pm
Forum: DM41X
Topic: DM41X Beta Programme
Replies: 326
Views: 19870

Re: DM41X Beta Programme

I just pulled out the 41CX manual, appendix G and see the running clock display including seconds is a moderate current drain of .5 to 2.0 mA, not equivalent to a running program, CAT display or SW. To be picky, the power consumption on CAT varies. When stopped, CAT 1-3 goes to standby consuming lo...