28 Aug
2011
28 Aug
'11
3:40 p.m.
On 28 Aug 2011 at 19:23, Tony Duell wrote:
I don;t have the schematics, but my first guss,
unfortunately, would
be a combinatorial PAL acting as a decoder for some of the address
lines (and manybe other signals).
Pulling the display cover plate off and doing a little circuit
tracing shows that this IC drives various selects and also CAS for
the display DRAM (4x4416).. In fact, it looks as if the HAL10L8 at
position 5G on the P2 revision of the display controller is exactly
the same part. So, without the real thing, it'd be a matter of
trying to synthesize a replacement. Not worth the effort for me.
I'll leave it to Dave.
--Chuck