Hello Bob, If there is anyway I can get a copy of the disk I would be very appreciative. you can contect me personally, pmbroth@... Thank you in advance,...
What's your address? I'll dig it out and mail a copy. It may be some days before I get to a Mod. 4 to make the copy. Bob Doerr in the beautiful Missouri Ozarks...
Bob Doerr
bdoerr@...
Sep 2, 2008 10:54 am
2601
Hello Bob, I sent you a personal email, if you do not get it please let me know. Brian...
Messages received; I think I replied. Bob Doerr in the beautiful Missouri Ozarks Editor, since 1992, Missouri State Genealogical Association Journal,...
Bob Doerr
bdoerr@...
Sep 3, 2008 10:12 am
2603
Thank you, I did not receive anything. I'm glad you received my email. Thank you again!!!!...
Hello all, I have a Grafyx Solution GX 5.1 hi res card that I have taken from a 4P and wish to install it into my 4D (both units gate array). My problem is...
Hi I sent you two 5.25 floppies. They are different, but I do not know what is different between them. Each started my TRS-80 5 MB HD OK. I have no...
Bob Doerr
bdoerr@...
Sep 8, 2008 1:40 pm
2607
Does anyone on the list have one of the optional Percom "Electric Crayon" add-ons for the TRS-80? I'd like to find the schematics and technical details on it....
As far as I know, the Electric Crayon wasn't a Percom product. It was made by a bunch of smart folks in Yaphank, Long Island, NY. They brought it to a meeting...
... claimed it ... a TI ... games, and ... Then the spec sheet for the TMS9918 or TMS9918A would be a good start. If it is the same as the Coleco, it would be...
... They must have sold the product to Percom. The full-page Percom advertisement in the April 1980 issue of 80 Microcomputing gives the product's full name as...
They should have arrived by now!! Bob Doerr in the beautiful Missouri Ozarks Editor, since 1992, Missouri State Genealogical Association Journal,...
Bob Doerr
bdoerr@...
Sep 15, 2008 1:50 am
2613
Don't know how many of you remenber "People's Pascal I". It was a p-code compiler based on the Byte series on Tiny Pascal. I had used it many years ago with my...
... I've got one, but it's kinda buried. Have the manual as well. Alas, I think one of the chips on the parallel interface is blown. :-( -- Leonard Erickson...
Hi I had occasion to use my copies of them, too. I mine data onto a 4P. At the end of the day, I copy my work to drive 0, then invoke Supercross and copy the...
Bob Doerr
bdoerr@...
Sep 18, 2008 10:31 pm
2617
Hi Guys, I'm looking for documentation or an example of the raw track format for a TRS-80 model III disk - or more specifically - a NEWDOS/80 (bootable) SD or ...
Hi Guys, Does anyone have any info on how the WD179x actually decides when it has found an idam or dam on a track? Does it use the gap filler bytes & counts ...
... During the format, when you present the preamble to the IDAM or DAM ($F5) to the controller it won't write the clock transisition between bits 4 & 5. ... ...
... I think the lead in parts (=preamble=gap filler) are just patterns that will help the controller in detecting the IDAM/DAM and could theoretically be...
... Thanks Tim, Knut for your comments. ... Interesting. That will present a problem of sorts for me... see following... ... Reading the 179x datasheet, my...
FWIW, there is a long thread I started titled "Using a PIC as a floppy disk controller" on news:sci.electronics.design in '06 which might be worth a peek. Neil...
... Checked it out Neil, thanks. Noticed there was also some (erroneous) info on the Commodore 1541 drive as well. I've had some experience emulating this in ...
... Just finished simulating interrupts and READ_SECTOR command. Looked OK so I tried it out on real silicon... no go. :( Not surprised, I still have a few...
I just felt that a 20 MHz PIC or similar might be able to emulate an FDC. This would give a source of floppy controllers. Neil ... From: Mark McDougall Checked...
... track ... other GAP ... can't vary ... That matches my experience. GAP2 has to be exact but there is much more leeway for the other gaps. According to the...
... Right now I'm using jv2dmk to create the raw disk images so it's not so much of a problem, though at some stage I'd like to be able to read copy-protected...
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