APPLE CRAPPLE

After finding out that my CMS 9619 Advanced Single Board MicroComputer was having problems accessing the EXORbus , I tried some trouble shoo...

Update : Since this post I have figured out how to change the address map using a GAL IC. I recently posted some minor hardware modificati...

I finally got drivewire running on the CMS 9619 SBC. As a result, I managed to complete the bootup and have a virtual disk! Source code a...

The EXORbus MULTI-PLANE backplane is now available on my Tindie Store !

After getting OS9 to boot to the shell on my CMS 9619 SBC, I was hopeful to get the DriveWire module working to load in disk images in a mor...

Excited to see these EXORbus backplane cards arrive:

I just put in my first order for PCB fabrication today. After making some final modifications my ATX Powered EXORbus Backplane "MULTI-P...

I finally got it working thanks to the advice of a kind member of the Tandy Color Computer (CoCo) discord channel . Interrupts! Once I conne...

While I was waiting for my RAM to arrived, I tried burning an EEPROM for NitrOS-9 so that I could make the load time shorter and avoid the r...

This post is just to document and explore some of the interrupt options on the CMS 9619 that could be compatible with NitrOS-9's interru...

I spent some time today trying to get NitrOS-9 booting on the CMS 9619 SBC. I was able to get this working in emulation , so I was hopeful ...

Note the 5 28 pin sockets on the right side of the board for 4K or 8K SRAM or ROMs In order to get NitrOS-9 running on my CMS 9619 SBC ,...

I'm starting a bit late, but since I am in quarantine and working on some old computer stuff anyway, why not enter?! Here are my goals f...

I have had a little extra time lately since I don't have to commute for a while, so I pulled the CMS boards out of their storage boxes. ...

I have been working on some ideas to expand my CMS 9619 SBC . I thought an SD card interface would be a nice option, but I didn't want t...

I recently designed this backplane/extender/ATX power injector for EXORBus: The rendering does not show the card edge connectors that ...

With the the power and serial port breakout boards hooked up, I tried turning on the CMS 9619, with no luck- nothing from the serial ports. ...

Power I don't have a proper card cage for a micromodule system, and clipping power leads to the card edge seemed a little sketchy, so I...

Continuing my reverse engineering efforts on my CMS 9619 and 9609 SBCs, I downloaded the ROMs that were still in two of the boards. I insert...

I recently came into possession of a CMS 9619A Advanced Single Board Microcomputer. I have been unable to find any authoritative informatio...