Another image is available for Wednesday, January 6th, 2010
AEA AVT SSTV/FAX system for Amiga
|Here's a blast from (way back in) my past. A bit dusty, but still 100% functional.|
I developed the AVT system, a hardware/ software
The original system was built by me, for me, but proved of interest to the ham radio community, and eventually AEA became interested in the design. I reworked it completely for them, making it far more capable, and the result is as you see here.
I did the entire design of both versions, the original and the AEA version.
The circuit design was done in Electron, a schematic capture system I wrote, also in C; and I laid out the PCB using a combination of Electron and Boardmaster, a PCB layout and routing system I also wrote in a combination of C and 68000 assembler.
The Amiga side software for the AVT was written in 68000 assembler and Lattice C; nothing inline, strictly isolated functions.
The CPU programmer
The AVT's machine code was sent to the CPU programmer using a programming utility I wrote (again in C.)
The only pre-existing tools used that I didn't create myself were Metacomco's 68000 assembler, the Lattice C compiler, and Rick Stiles' UEDIT.
This version of the AVT system won technical achievement of the year at the Dayton ARO gathering after its initial release. There was even a trophy.
I still hear these on the air from time to time on 14.230 and 14.233 MHz as of 2010, which gives me pause to smile a bit.
#radio #design #hardware #firmware #avt #sstv #pcb #amiga
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