Re: [M100] Modifying TELCOM
I know this is off topic but which Psion do you have? I play with a 5mx now and then, but often just as a terminal.Sent from Samsung tablet Original message From: mark audacity romberg Date: 6/21/23 22:30 (GMT+01:00) To: m100@lists.bitchin100.com Subject: Re: [M100] Modifying TELCOM There’s a disassembly of the entire Model 100 ROM that I want to say I found on Club100, but I couldn’t swear to it. I just pulled out the parts from the TELCOM entry point to the next entry point. I’ve been going through it and replacing addresses with labels, such that it can be compiled run in high memory. I haven’t spent much time with it lately, got hooked on the Psion Organiser and that’s been eating all my hobby time. Neat little machine, kind of the Model T of handheld computers. —mark
Re: [M100] Modifying TELCOM
How about this one on GitHub (posted by a member) https://github.com/z88dk/techdocs/blob/master/targets/m100/m100.asm -- John. On Wed, Jun 21, 2023, 5:52 AM MikeS wrote: > Where did you find a disassembly of TELCOM? > > Thanks! > > m > > - Original Message - > From: "mark audacity romberg" > To: > Sent: Thursday, May 04, 2023 8:42 PM > Subject: [M100] Modifying TELCOM > > > I was looking at the disasssembled TELCOM source today, and it seems > there’s almost a kilobyte devoted to looking up and dialing phone numbers > that could be ditched, which has me thinking that it shouldn’t be too > cramped to add hardware handshaking and maybe even XMODEM once that (and > ADDRSS and SCHEDL, another 333 bytes of dead weight) are ripped out of the > ROM. > > Has anyone tried anything like this? I know about HTERM, but I want to > maintain modem functionality and I don’t care that much about VT emulation. > > —m.a= >
Re: [M100] Modifying TELCOM
There’s a disassembly of the entire Model 100 ROM that I want to say I found on Club100, but I couldn’t swear to it. I just pulled out the parts from the TELCOM entry point to the next entry point. I’ve been going through it and replacing addresses with labels, such that it can be compiled run in high memory. I haven’t spent much time with it lately, got hooked on the Psion Organiser and that’s been eating all my hobby time. Neat little machine, kind of the Model T of handheld computers. —mark
Re: [M100] Modifying TELCOM
Where did you find a disassembly of TELCOM? Thanks! m - Original Message - From: "mark audacity romberg" To: Sent: Thursday, May 04, 2023 8:42 PM Subject: [M100] Modifying TELCOM I was looking at the disasssembled TELCOM source today, and it seems there’s almost a kilobyte devoted to looking up and dialing phone numbers that could be ditched, which has me thinking that it shouldn’t be too cramped to add hardware handshaking and maybe even XMODEM once that (and ADDRSS and SCHEDL, another 333 bytes of dead weight) are ripped out of the ROM. Has anyone tried anything like this? I know about HTERM, but I want to maintain modem functionality and I don’t care that much about VT emulation. —m.a=
Re: [M100] Modifying TELCOM
On 5/4/23 20:42, mark audacity romberg wrote: I was looking at the disasssembled TELCOM source today, and it seems there’s almost a kilobyte devoted to looking up and dialing phone numbers that could be ditched, which has me thinking that it shouldn’t be too cramped to add hardware handshaking and maybe even XMODEM once that (and ADDRSS and SCHEDL, another 333 bytes of dead weight) are ripped out of the ROM. Has anyone tried anything like this? I know about HTERM, but I want to maintain modem functionality and I don’t care that much about VT emulation. —m.a There is LibROM https://sarahkmarr.com/retromodel100.html The details are still quite different from your idea, isn't even compatible with US models and ditches the modem support entirely because UK hardware etc, but it's an example of successfully change the main rom software more than just changing the date and fixing a tiny math bug. -- bkw
