the difference that is no difference makes no difference
So I was at that moment when I pack away some old computer I’ve been working on for a while (the TI-99/4a) and I happen to read about the p-code card. When I was a kid I remember seeing books about the UCSD p-system or UCSD Pascal and hey the 99/4a had this p-code card […]
The Texas Instruments TI-99/4 came out in 1979, and had some minor updates to become the TI-99/4A in 1981. Texas Instruments has seemingly been around ‘forever’. They make a lot of things, but just like today they made a lot of semiconductors in the 1970s and unsurprisingly the TI-99/4A has a lot of ‘TI’ chips […]
After getting the fast RAM and IDE interface all working on one of my Amiga 500s, it gets a bit annoying trying to find the correct boot floppy that has all the correct partition settings in a mountlist. I actually don’t mind the slightly slower boot with the floppy, but the convenience of ‘auto boot’ […]
So one last problem I had with adapting the Dragon ROM and Floppy Emulator to work on my Coco 2 was to solve why OS-9 would not load. So most Coco disk images are not for OS-9, but there are quite a few in the colorcomputerarchive that do use OS-9, so I was curious. There […]
Radio Shack (or Tandy as I always knew it growing up in Australia) hopped on the home computer bandwagon quite early. There was the TRS-80 in 1977 and then in 1980 they came out with the ‘Color Computer’ (aka ‘CoCo’) . That was the Color Computer 1. I’ve always assumed it is based on a […]
The Dick Smith VZ200 is a cool little computer from 1983. I actually had one when I was a teenager, but my one was somehow pulled apart in the 80s, then packed in a box in a shed in Australia for some decades. When I recovered it later on, it had been used by rats […]
PiTubeDirect is a project that turns a Raspberry Pi into one of many different coprocessors for the BBC Micro. It also works on other Acorn 8 bit computers including the Electron, but you need extra hardware for that. I have a few old Raspberry Pi’s including a Raspberry Pi Zero that was not getting much […]
Like all good retro enthusiasts I have some old Windows Laptop/Desktop that runs some ancient Windows program(s) that use a parallel port. In my case I have an old Thinkpad T42 running Windows XP. It has a parallel port and I have an old Willem EPROM/Flash/Whatever programmer that uses a parallel port. I am not […]
So making this simple A500 fast RAM expansion wasn’t too hard, and it reminded me that I had been meaning to make up one of the simple A500 IDE interfaces that have been around forever. There is this John Tsiombikas one that uses a bunch of simple AND, NAND and NOT gates, and this other […]
I have a few Amigas, and WHDLOAD is an amazing piece of software for running old games but you need a hard drive and plenty of memory to make it work properly. That generally means I am using my Amiga 600 (4MB fast RAM and 2MB chip) or my Amiga 1200 (also with 4MB fast […]
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