Re: Zip Chips

[nparker@cie.uoregon.edu (Neil Parker)]

In article <18696@mindlink.bc.ca> Clayten_Hamacher@mindlink.bc.ca (Clayten
Hamacher) writes:
>[...stuff about Zip chip punted (I don't have a Zip)...]
>P.P.S. I asked for instruction on how to change BRAM locations, I meant
>'instruction on how to change them WITHOUT using tools' so that I can do it
>from any platform with a non-prodos program if I wish.

Are you definitely absolutely positively sure you want to do this without
using the tools at all?  It can be done, but it's a lot less convenient
than using the tools.  The tool calls that change the BRAM locations are
in ROM, so they're available at all times, no matter what operating system
you booted (yes, even DOS 3.3), and they're there in all versions of the
GS.

The reason the BRAM tool calls exist in the first place is that the BRAM
isn't part of the main memory map--it's essentially peripheral device, and
you have to access it like any other peripheral device, through its control
registers in the I/O space.  The tool calls exist to protect you from
having to know the ugly details of how to program the the control
registers.

If you insist on bypassing the tools, I have some information I can send
you on how to do it.  But the tool calls are a lot easier, and they do work
on all GS's and all operating systems.

                    - Neil Parker
--
Neil Parker                 No cute ASCII art...no cute quote...no cute
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