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)
