Re: A86: Loading Strings and Graphics

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Re: A86: Loading Strings and Graphics


processor differences aside, this would be EXTREMELY difficult. 
(actually processor differences are probably irrelevant)

first of all, even if the display resolution were the same, color (if you
use a color screen) takes many times the amount of memory as black &
white.  that memory has to come from somewhere.  there's not really
enough space on ram page 0 for that & stealing memory elsewhere would get
tricky.  i suppose you theoretically could add a second ram chip,
doubling the total memory on the calc, but that'd be hideous to solder

next problem is that you'd need to figure out the connection from the
main ti-86 board to the display board and the same for the gameboy
display.  (a nice logic analyzer would probly be a great help for that.) 
these are probably different enough to require a decoder chip to be used,
probably custom although a microcontroller might do the trick.

if you're luck or crafty enought you won't need to modify the rom to work
with the new display, but any new features gained from this would require
custom asm routines

it'd probly be a LOT easier to map the keyboard off of the ti-86 onto
someplace in the gameboy's memory or something

-josh

On Mon, 22 May 2000 19:58:49 EDT RoniBarrett@aol.com writes:
> 
> In a message dated 5/22/00 7:19:01 PM Eastern Daylight Time, 
> victor-manuel@ctv.es writes:
> 
> << Itīs an interesting idea. If you can connect the screen of the 
> GameBoy
>  to Ti86..... They have the same proccesor. They are the same thing, 
> but
>  whith other number of keys.  :-).
>   >>
> Hmm... really cool idea. id like to look into this. Does anyone know 
> the 
> resolution of the gbc screen?
> 
> Jeff Barrett
> Hybridsoft
> Co-founder and Director of TI Programming
> Hybridsoft.cjb.net
> Ronibarrett@aol.com
> AIM:RoniBarrett
> ICQ:67472242
> 

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