(This is continuation of my previous log on what I've done up to a year ago.) My first approach was to understand how SPX-MPU handles file upload and run. If successful, I'll be able to load and run my own software. This is desirable because...
I was doing research for a new hobby project. I wanted to build a 68000 system on a bread board with I/O and possible video. As I dug deeper I started shifting towards maybe starting with an 8 bit CPU (6809) and then do the 68000 after. ...
This is a first design for the instruction set. In the final computer, the instruction set could be changed any moment by putting a new microcode in the Flash microstore. This instruction set borrows from the 68000, PDP-11 and SPARC ! Here are the registers:...
The resource utilization in the 5CEFA2F23 FPGA Card is: There's more than enough left over block memory to have 128KB of SRAM. The only complication is that the TS2 memory map wasn't designed for more than 32KB. That is because it places the...
Now that we have a working GCC toolchain, let's write a program to test the External SRAM. Need to use the patch that fixes the timeout for srecord loading. Using this patched version of the srecord file. I'm using a GitHub repo to transfer...
So far, so good... Hello, Hackaday! I want to tell you about my pet project aimed at creation of homebrew computer. I've been doing this project for three years. In this entry I want to briefly summarize what's been done. Why I'am doing this? Mostly...
So up until this point, I had no knowledge or prior experience writing any 68K program C, ASM or otherwise. My background in programming up to this point was Visual Basic 6/VBScript and microcontroller ASM, as that's what I grew up with, VB being...
So we have a good system up and running and what is left to do? We have now in place: TG68 68010 running at 100mhz with a double-precision FPU.Console via telnet over ethernet.16mb DDR3 with a L2 cache.Gameduino, OPL3 and SDCard via SPI interfaces.RTC...
Where can I ask for help with building & sourcing components?The best place is on the SpritesMind forum.Can I manufacture these and sell them?Yes, of course you can. And no, I don't want any royalties. I only ask that you abide by the spirit of the copyleft...
I got the idea for this project when I found my old Z80 Single Board Computer in the attic. It turned out that it actually still works, and I suddenly remembered how great a learning experience it was to design and build it from scratch, making a lot...
The desired hardware configuration is:Quad 68030 CPUs with 68882 coprocessors4GB of RAM (LPDDR2?)RS232 console interface10/100Mbit ethernet Intel 27512 EPROMMicroSD storageThe hope is to run Linux / BSD.The biggest obstacles I see already are:My lack...
Fuzix Unfortunately, the 128KB RAM is too little for the system to run Fuzix. In theory, I could change the board a bit and swap the 32KB RAM chips for 512KB RAM. But every time I looked at the wires at the back of the board, I'm too afraid I will permanently...
There are 4 expansion slots on the board. Each slot is using a 64-pin DIN 41612 connector. The connector supply data, address and some common bus signals as well as power to each of the boards. There are also 2 select signals for each slot, all access...
I'm aware of many issues with my collection. I've been informed that not every is attributable to ETI, for example the Forth manual was written by Eric Lindsay directly for Applix. I should probably file the lot under the com/Applix directory, and say...