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My latest TRS-80 project Model III -Electronics upgrade to Model 4 -Faux prototype keyboard -High Res Graphics Board -NOS IBM Tandon floppy drives -FreHD hard drive painted silver -NOS Radio Shack anti-glare screen cover

Lear Siegler ADM 3A modernized and connected to Raspberry PI via RS-232

Trying to connect a Model 4 to a Raspberry Pi RS232 serial port for linux login. On the PI side "agetty" is attached to the serial port. On the TRS80 side I get a login prompt as expected however anything typed on the Model 4 isn't sent back to the PI. So it's like TX isn't working. Is there...

Must be working with green screen. Exec condition. Must have upper/lower case. Willing to pay good price for nice one. Thank you. 3A, 31, or 5

I'm working a Compuserve interface that simulates dialing, connecting 300 Baud, etc. I'm a big Compuserve fan. Anyway It lets you nav to the game menu and pick a game or it will eventually pick a random game to avoid screen burn. Looking for games that have a "demo mode" after loading, as do all...

I've got everything working with xtrs and Ubuntu (latest) however almost all DMK and rom images repeat typed characters double or up to eight times. In the screen shot below I type "1" once. Tried various -keystretch settings without any luck. I'm betting someone has seen this before ? Launch...

Anybody know of sample code, formulas, or documents describing the machine language DATA for generating simple sounds through the cassette port? For example using POKE from Level 2 DOS. I found the flying saucer example but I'm looking for more sounds, the DATA part of the example. A simple beep...

Looking for two IBM branded Tandon TM1002a Full height drives. Must be working and excellent condition. Willing to pay good price.

I'm installing model 4 electronics in a nice Model 3 chassis. I know Radio Shack offered Model 3 upgrade kits back in the day (and those were probably non-gate array motherboards) however do collectors prefer Gate Array or Non-Gate Array electronics in terms of reliability? I'm guessing newer...

Looking for "known" working power supply to fix and troubleshoot a Model III. It's the two board type. Like this:

Title says it all! For model 4. Thanks!

Does anybody know why the letters "w" and "m" are truncated on this Model 4? See attached screen shot eg. "View Formatted Buffers?" I have tried replacing the following from a known working Model 4 without any luck: -Video board and CRT -All removable chips, large single piece motherboard

Hello. Does anyone know if it's possible to copy files from a LDOS 5.25 disk to a NEWDOS/80 5.25 disk? I've loaded NEWDOS/80 and tried various PDRIVE / COPY commands an no luck. I've successfully copied to TRSDOS though, for example COPY,FILE:1,TO,FILE:0,SPDN=4