Re: TI-H: direct bus access
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Re: TI-H: direct bus access
The 68000 can directly access 16MB ram so editing rom to reflect the new
ram length, add a few resistors, and throw it back in the case.
>An ASM program be used instead to use it like storage only memory. It
>would be the cheaper expander method. The ROM deal would be the more
>complex version, but I have a thought.
>
>Is it possible to plant ASM in a backup to replace address ranges and
>trick the calc into reading RAM instead of ROM. Then add the new "ROM"
>code into the RAM and direct it to jump from the end of the existing
>memory and to the added memory. I realize it's probably hell to create
>suce a program, maybe impossible, but is it possible, and if it is, is
>it worth a try? If it were possible, you could have contiguous memory
>expansion with only a customized backup. It could be placed on the fargo
>backup and transfered. The altered RAM could possibly do the job.
>
>Is this possible???!!!???!!!???
>
>Richard Piotter
>richfiles1@hotmail.com
>
>>
>>
>>Thats the best thing in the world! Now it is possible directly expand
>the
>>memory to 16MB! (with an edited rom)
>>
>>Grant
>>
>>>Would anyone care if I told you that I have achieved direct bus access
>to
>>>a TI 92? This has enabeled me to create external memory-mapped I/O
>>>ports. Is this a good thing or does anyone even care?
>>>
>>>Chris Lambert
>>>clambert@geneva.edu
>>>calan@hotmail.com
>>>URL: www.geocities.com/siliconvalley/peaks/6869
>>
>>---
>>Grant Stockly
>>AppleCyber - http://www.alaska.net/~gussie
>>
>>
>>
>
>
>______________________________________________________
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---
Grant Stockly
AppleCyber - http://www.alaska.net/~gussie
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