I recapped it, replaced the screen and chassis (which had minor cosmetic damage), and then got everything working. I have several projects and upgrades in mind, one of which I have been trying to figure out if it's even possible.

How difficult would it be to use the other screen and chassis with a new PC or Raspberry Pi? Is there any way to use the original screen as a display for something else?

hello TRS-80 friends! I thought I'd explore XRoar as an alternative to MAME as it happens to be the default for a frontend called ES-DE.

I have no issues getting the following to work:

xroar -fs -default-machine coco2bus -no-disk-write-back ZONX.DSK

Once the coco boots and I am provided control of the command prompt, I have to manually type:

LOADM"ZONX":EXEC

in MAME, there is a command line option to send boot commands:

-autoboot_command "LOADM \"ZONX\":EXEC\n" 

What is the equivalent command line option in XRoar?

ANSWER: use -type

This is the equivalent command in XRoar:

xroar -m coco2bus -no-disk-write-back -fs -load ZONX.DSK -type 'LOADM"ZONX":EXEC\r'

Model 100 w/24k RAM

FlexROM w/y2k patched v102 ROM

RAM batt replaced and re-capped

Built a reQUAD v028 from bkw777's github repo. Power on the first time and the unit shows 29k RAM, so it was detected and is overriding the system RAM properly. Entered OUT 128,0 in BASIC, then pressed enter, and although received a prompt "Select:" while still in BASIC, I pressed the reset button per bkw777's guide. The screen went blank, and stays that way after CTRL+Brk+Reset, and power cycling.

The unit will work properly again when the reQUAD removed, but will now only present a blank screen on power-up when it is re-inserted, and does not beep while blank if I type DEL/BKSP.

Has anyone setup phpstorm to code for 6809 assembly?

maybe another ide I should use?

I loaded in Robot Attack on my TRS80 through the tape player and instead of running, the screen froze with the cassette "**" stuck in the corner. I tried to turn it off then back on and this garbled mess comes up everytime. Is it an issue with loose ram?

I should have just bought one! Still, it works, and I learned a lot about keyboards.

TLDR; Is it normal for some devices to make the Model 100 screen dim when connected?

Received a WIRSa today for my Model 100. Turning on the unit makes the screen on the 100 dim some for a few seconds, then it brightens back up. Thought maybe I had damaged the 100 because after a few minutes of trying to get the WiFi connected, the WIRSa started bootlooping.

Fixed the WIRSa by going serial over usb and factory defaulting it. Now it is working properly and the 100 is on the internet, still with the dimming during initial connection.

Using the UBPD, I can still cli without issue both sending and receiving files at 19.2k baud, but the WIRSa won't reliably work at faster than 300 baud.

I have a CoCo 2 and an SDC. I have owned this pair for a couple years and have used it off and on. I was using it quite a bit in the past few days. This morning I decided to load a few more disk images on the sd card. When I put the card back into the SDC I can no longer access it on the CoCo.

DRIVE gives me:

0: ON ----- 0
1: ON ----- 0
2: ON DW #0 2
3: ON DW #0 3

If I type "DIR" I get nothing. My CoCo disk images are in a sub-directory called "COCO" so usually I type:

DIR "/COCO/*"

If I do this now, I get nothing, just "OK".

My first guess was something about one of the disk images I put on caused an issue such as an illegal character in the filename so I deleted those newly added images.

Then, I thought the SD card was getting flaky. I pulled it out, put it in my PC (reads it fine), zipped up everything, reformatted the card, re-dumped all the disk images. The CoCo SDC still can't see anything.

I then found another SD card, put an image on it, and tried that. Still not able to see it in the SDC.

Lastly, I tried spraying deoxit both in the CoCo's cartridge port and the SDC's SD card slot. No change.

Any ideas?

Using S.Adolphs memchk.ba from the club100 repo, I get 5 beeps. My unit is a 24k unit with 2/3 optram soldered.

Would there be any issue with desoldering both optram and the main ram, replacing them ALL with bkw777's ModelT RAM boards (would add the 3rd optram as well for the full 32k)?

I have the ModelT boards queued up with pcbway, along with several of bkw777's other boards.

Also, what are known failure modes regarding M100 usage with bad ram modules?

FWIW, the motherboard was re-capped by me last week, and the NiCd was replaced with a brand-new NiMH. Only 3 caps (2 above the cpu, and 1 in the PSU section) had slightly leaked and discolored the board. There was no corrosion on any adjacent components.

Per the spec sheet, the ModelT modules have a max 55ns access time so they would be prime units for the 5MHz mod. I have -4 stock modules soldered in ATM (120 or 150ns access time I believe.

Recently pulled out my model 100 and would like to upgrade it. Soigeneris is out of stock of the classic, and I get no response from s.adolph regarding purchasing a # or cpm. Even dial-a-rom and ram+ are out of stock.

Anyone out there willing to sell one of any of the above?

I'm driving thinking of the days I spent trying to get joysticks to work on the coco. Esp that onr with the bug red ball on the top it.

and then it dawns on me

If I used both joystick ports I could make a dual analog stick 2 button controller for the coco.

o why, why didn't I think of that back then....

In reality I would probably use the second joystick analog input to fake a set of 6 buttons and make an analog controller version of the Sega Gensis controller.

I need direction to get my childhood computer working again. So far I have recapped, new keyboard connector and a few chips. Is this the manual I should use. What is the most likely from this image. I have a donor model 1 as well and have swapped the cpu and rom.

Hello, my apologies if this is not the best sub to ask this.

I like to collect officially licensed Movie titles. I already own RoboCop and Predator for the CoCo 3. I could not really find a definitive list of games and the best list I could find did not even have Predator on it. I see there is a Poltergeist game as well. Does anyone know of any other movie tie in games that were produced physically for any of the Tandy systems?

I just upgraded my coco1 to a composite video connection using the mod as detailed in http://www.cocopedia.com/wiki/index.php/CoCo_1_composite_video and it worked out well with one exception: the colors look incorrect! I expect that the background would be green when I turn it on, but it is more of a burnt orange. Has anyone else experienced this and found a solution?

Just bought a Sharp PC-1500 and plotter. It came with a UV EEPROM card that limited the operation. Once I took that out I got it working and reliving my early professional days after college. I have purchased a 16kB memory card.

I don’t have a the door memory slot. The UV card is a full module and there doesn’t use the door. Anywhere I can get one? Or does some have a 3D printer file for one?

I just got a model 4 taken apart and cleaned, and discovered a hole punched through the bottom of the keyboard PCB. Nothing on the keyboard functions other than the reset button.

I haven't taken it apart fully yet, but I assume the membrane and foil (ground) are also fried.

Does anyone have any ideas to repair this thing? I am willing to use modern parts, and would rather not buy another full computer to tear apart.

my brother and i are currently in the early stages of trying to clean up this trs-80 model ii found in our granddads basement. as you can see, it's a bit of a mess (seems like a mouse has been living in there for a while).

unfortunately we are missing the boot disk and from what i can tell on trs-80.com, the disks are only available for models 1 and 3. does anyone know where we might be able to source the disk for the model 2?

thanks!