[TI-H] Re: TI-89 HW2 overclocking
[Prev][Next][Index][Thread]
[TI-H] Re: TI-89 HW2 overclocking
On Wed, 26 Feb 2003 20:05:51 +0100, Olle Hedman <alh@home.se> wrote:
> Another thing to do if you anyway are going into the calc, and replacing
> the ram chip, is to cram in a 2MB chip instead of the 256K one.
> or atleast 512 or something.
> the memory area between 0 and 0x1fffff is reserved for ram, but only 0 -
> 0x3ffff is used, so it should be fairly simple.
> Maybe find a chip that is as pin compatible as possible, and bend up the
> pins not compatible and solder short wires from these.
> I don't remember, is the ram repeated in this 2M area? if so, its even
> better, no need to change the chip select wiring, just use the old one.
> just add some more wires for the extra adress pins.
instead of the 256K one? but the 89 uses two 128K chips...
--
B.A. Baracus
Follow-Ups:
References: