Re: TI-H: In desperate need of help
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> Hey..
> By the way, does any one know which of the 3 chips is the Z80??
> on the motherboard.. This is my guess, the chip made by TI is the ROM
> (naturally), The chip in the Center(in the CE version) is the Z80, but it
> only has 28 pins.. what gives? the other chip has a hundred or so, which
> rules that..I bet that's the memory chip.. If I'm correct, then I've got a
> couple of other questions too.. the center chip does not communicate
> directly to the LCD board either.. any info would be appreciated.
I'm so proud I figured this out....
The chip on the far right IS the Z80, because it has 80 pins and the
normal (non-toshiba version) Z80's 40 pins are each used twice(this was
done for easier layout on the board because some of the pins do send and
recieve functions). I also know this because the far right chip is the
only one that outputs 15 of its pins to the LCD board. The ram chip is
in the middle and the rom is on the left.
I also think I figured out how to(with a mess of modifications) disable
the ROM through a shell, and enable the processor to be upgraded by
something like the Z8002. <---that sucker is 16-bit!! I will soon be
checking compatability for the Zilogs 32-bit microprocessors.
I guess I was wrong about whoever I yelled about that RF link. WERE
LUNATICS AND WE WILL TRY TO DO TO OUR CALCULATORS WHATEVER POPS INTO OUR
INSANE LITTLE HEADS!!! HEEEEHEEEEEEE!!
By the way, does anybody know who I can call about getting my own rom
chip made for a new processor and memory upgrade? That's pretty crazy,
but I need some solid-state memory to my own specifications.
-Chris
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