Posted By
crock
on 2012-09-04
18:45:11
 |  Re: c16 doesnt work but screen isn't black
Hi chudson - you posted truncated versions of the links so I can't see your screenshots but if you see the normal border and screen colours it means the cpu/ted/pla & kernal are at least partially working. If the symbols on the screen are part of the normal character set, this also indicates the the TED is reading from the kernal and rendering OK.
Easy way to check if it's the basic ROM is to carefully take the chip out of the board and turn the machine on while holding down run/stop. This would normally cause the machine to drop into the m/l monitor.
Let me see the screen shots and I may be able to tell you more. If it is any of the ROM's or the PLA, I have plenty of spares I can send you for the cost of postage.
Rob
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