And in any event, I did actually say "I think I might actually go with xmodem or y or zmodem or kermit etc,.."
On Tue, Sep 11, 2018 at 6:42 PM Brian White <bw.al...@gmail.com> wrote: > I assume zmodem is out of the question for an 8085 with 32k of main rom > which is mostly already used up by...main rom. > > On Tue, Sep 11, 2018 at 6:39 PM John Gardner <gof...@gmail.com> wrote: > >> ...If you could make room for only one thing in the main rom, would it >> be a tpdd dos, or xmodem? >> >> How about Z-Modem? "8) >> >> On 9/11/18, Kurt McCullum <ku...@fastmail.com> wrote: >> > UR-II and Sardine both have TS-DOS code that is stripped down to the >> > bare minimum. Basically just a loader for a specific filename ( >> DOS100.CO >> > or SAR100.CO). Sardine has the same loader plus a couple other >> features. >> > The TPDD protocol works. It may not be the 'standard' for anything but >> > our Model-Ts but after all these years that's what we've got. Having TS- >> > DOS in ROM solves a lot of problems. >> > Kurt >> > >> > >> > On Tue, Sep 11, 2018, at 3:19 PM, Brian White wrote: >> >> If you could make room for only one thing in the main rom, would it be >> >> a tpdd dos, or xmodem?> >> >> Remember, tpdd was only one of a few different kinds of disks, it's >> >> only a sort of defacto standard now because of various reasons, >> >> probably mostly because it works over the serial port and the protocol >> >> was simple enough to be reverse engineered and re-implimented by >> >> others, making all the emulators possible.> If I had to choose one >> thing >> >> to go right into the main rom, I think I >> >> might actually go with xmodem or y or zmodem or kermit etc, some >> >> standard generic binary capable serial protocol, rather than tpdd. And >> >> rts/cts support in TELCOM & BASIC.> That's probably the single thing >> about >> >> the 600 that I like. It has >> >> xmodem built in to it's telcom app, and that makes it no problem to >> >> recover from resets any time any where. You can regenerate the utility >> >> disk and install BASIC from scratch with just a serial cable and the >> >> downloaded files.> What other things would people say should be in >> there, >> >> after 30 years >> >> of hindsight? How about, rather than some more software baked in, just >> >> more, and more useful hooks? Like how UR2 loads TS-DOS without >> >> containing TS-DOS, or like the few hooks that do exist that the DVI >> >> uses, but more and better?> How about... the MFORTH rom with a minimal >> set >> >> of baked-in features, >> >> maybe implemented in forth themselves. Like right now there are a >> >> bunch of ML routines that various utils and BASIC all use, while this >> >> would be forth has all the ml, and everything else just uses forth. >> >> And the bulk of apps and utils would be forth programs in ram and as >> >> little as possible in rom. Use as much of the rom space as possible to >> >> make forth itself as good as possible. And the rom just has enough >> >> features baked-in to make it easy to load the real apps from elsewhere >> >> any time.> I guess really I wouldn't want any rom at all except just >> >> something >> >> tiny that didn't do anything except load the real "os" from somewhere >> >> else, so you could do that forth idea and then have an updated forth >> >> the next year, but I'm trying to stay within the context of 1983 and >> >> Tandy's cost and time limits.> >> >> >> >> >> >> On Tue, Sep 11, 2018 at 4:03 PM Kevin Becker >> >> <ke...@kevinbecker.org> wrote:>> SCHEDL and ADDRSS could both go for >> me, >> >> but I suspect they are >> >>> pretty small>> >> >>> On Tue, Sep 11, 2018 at 3:56 PM, you got me >> >>> <ven...@hotmail.com> wrote:>>> would ts-dos fit on the main rom if >> >>> SCHEDULE was taken off? Who >> >>>> uses that?>>> >> >>>> *From:* M100 <m100-boun...@lists.bitchin100.com> on behalf of Kurt >> >>>> McCullum <ku...@fastmail.com> *Sent:* Tuesday, September 11, 2018 >> >>>> 7:42:24 PM *To:* m100@lists.bitchin100.com *Subject:* Re: [M100] >> >>>> call for programs and games>>> >> >>>> >> >>>> This brings a question to mind. The Tandy 200 and NEC 8201 (and >> >>>> 8300) have multiple banks. Since the 27c512 is identical to the >> >>>> 27c256 ROM with the exception of pin 1 which is for address 15. >> >>>> Could a 27C512 be inserted with pin 1 bent to stick out to the side >> >>>> and then a wire run from pin 1 to the enable pin of bank 2? So >> >>>> switching banks also switches OptRoms?>>> >> >>>> I have read an article about installing a switch to do this but I >> >>>> wasn't sure if this could be done by taping the existing hardware.>>> >> >>>> Kurt >> >>>> >> >>>> >> >>>> On Tue, Sep 11, 2018, at 9:36 AM, Mike Stein wrote: >> >>>>> >> >>>>> Another simple approach that's often used is to have an adapter >> >>>>> with an (E)EPROM large enough to hold several ROM images and a >> >>>>> physical (or logical) switch to select among them (essentially what >> >>>>> my adapter does, but with only one OptROM image).>>>> >> >>>>> Unfortunately there's very little vertical clearance in these >> >>>>> babies so there's not much room to use the old trick of stacking >> >>>>> several chips with the select lines brought out the side. I haven't >> >>>>> looked at my T102 but in the M100 there is enough room for one >> piggy- >> >>>>> backed chip which would give you at least three 32KB OptROM images, >> >>>>> but it does lift the keyboard slightly unless you remove the >> >>>>> socket; depending on the socket used you might also gain some >> >>>>> clearance if you trim the IC leads.>>>> >> >>>>> Another approach to using several and/or larger ROMs is to make a >> >>>>> little board that puts the chips upside down in the space beside >> >>>>> the system ROM; as a matter of fact the plan with this prototype >> >>>>> board was to add another RAM or ROM socket beside the existing >> one:>>>> >> >>>>> >> >>>>> >> >>>>> >> >>>>> >> >>>>> >> >>>>> ----- Original Message ----- >> >>>>> From: "Greg Swallow" <gswal...@mchsi.com> >> >>>>> To: <m...@bitchin100.com> >> >>>>> Sent: Tuesday, September 11, 2018 9:34 AM >> >>>>> Subject: Re: [M100] call for programs and games >> >>>>> >> >>>>> > Multiple ROMs would be easy enough with a REX. Of course if the >> >>>>> > REX goes, you could be out of luck.>>> >> >>>> >> >>> >> >> >> >> >> >> -- >> >> bkw >> >> Email had 2 attachments: >> > >> > >> >> * C2.JPG 23k (image/jpeg) >> >> * ComboC6.JPG 11k (image/jpeg) >> > >> > > > -- > bkw > -- bkw
