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Pictures and the PCB layout to follow at some point..... I might be old or something, but I do like 19" monitors.
Modifying a Dynamo cabinet to have an in-place easily rotate-able monitor. The new shrunk version of the WSF board is under final test, it's been reduced in width by 1" and now measures 4.5" x 4.5".
Here is it Yet Another ZX-spectrum AT Keyboard Interface....
Now this is cool, the MAME folks have dumped the intenal ROM from the Fujitsu micro-controller used to generate the noise sounds on Galaga, Bosco and Xevious !
Results came out very well for a double sided prototyping kit etch with10mil features. This is ultimately for a FPGA carrier board I can do some experiments with during the next month. Some pics of the proto board that's been under test. I will be releasing the MC6800 emulation core which I wrote for the Atmel ATMEGA8 as freeware, once the source is cleaned up a little.
Next up I'm looking at the HC55564 CVSD chip, originally from Harris, which was used for sampled speech playback. I'm still messing with Williams gameboard hardware, which is really fun. The Motorola 6809 was a great CPU and it interfaces nicely with Xilinx parts, a strange marriage of 1970's and 21st century parts.
A few parts from a 22mm neckboard were donated and a layout very similar to the original board was put down.
It's designed to help with the compatibility between games and TV.
Here's all the details, source and pcb layout for an Atari LETA on a Xilinx CPLD About a year ago I reversed the logic for one of the SPLD ( simple programmable logic device ) for an Atari Rampart board that was missing the part.