Re: A86: Re: Taking apart the TI-86...
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Re: A86: Re: Taking apart the TI-86...
The Z80 in the TI calculators are custom made. That mins that the pin layout
are different, and som of the internal structure are different to I think.
Stein S-J
>
>Ricci E. Adams wrote:
>
>> Does Zilog make any Z80 chips above 6MHz? If so, coudn't you just take
out
>> the Z80-6 and pop in a Z80-8 or Z80-10? That way you woudn't have to
>> reprogram the OS, since it would still be a Z80.
>>
>
>>
>
>The internal timing circitry would need to be changed out, your much better
off just turboing the calc. -Michael
>
>>
- Ricci Adams
>>
ricci@chipsnet.com
>>
>> At 04:29 PM 3/26/98 -0600, you wrote:
>> >
>> >>3. There are numbers on the transistors, diodes, transformers, etc...
and
>> >I
>> >>was wondering if these are places in asm where you call to
>> >
>> >ummm what? call the numbers on the circuitry? umm..... no the registers
are
>> >made by latches and flipflops in the circuitry and the calls are made to
the
>> >rom or ram in the calc
>> >
>> >>4. Could you possibly take apart the processors, reconstruct them and
put
>> >an
>> >>upgraded version in it (with more memory and recourses, faster,
etc...)(I
>> >>have a friend that makes processors and stuff and is professional)
>> >
>> >
>> >processors dont store mem, unless its flash rom, and you could only
>> >'reconstruct' a chip if it had flash rom and you had the hardware to
flash
>> >it, sure you could put in another chip, but then you would have to
program
>> >the os :)
>> >
>
>
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