Re: ROM 01 vs ROM 3

[David.Empson@bbs.actrix.gen.nz]

In article <19350@mindlink.bc.ca> Clayten_Hamacher@mindlink.bc.ca (Clayten Hamacher) writes:
> Recently someone posted something about all the plusses of ROM 3, does it
> have any drawbacks... Not counting the fact that some badly written software
> is too ROM dependant to run on it, I'm talking about the ROM and motherboard
> itself.

Other than software and hardware incompatiblities with some products, I
can't think of any drawbacks of the ROM 03.

> P.S. It has a newer set of tools but considering system 6 has even newer
> tools wouldn't cause those to be loaded in, thus losing the 7% speed
> advantage you gained by having them in ROM?

Some of the functions of the ROM 03 tools will be patched out by System
6, and a couple of the toolsets are replaced entirely.  The majority
of them still run from ROM.

> And yet another... One version of the ROM 3 had memory peeker etc locked in..
> I would prefer this because they are in ROM and therefore not taking up any
> RAM (aside from whatever they might use when executed)..

You can make them appear permanetly by setting a bit in the battery
RAM.  I don't have the details handy.

The main reason they don't always appear is that they're intended for
programmers, not average users.

> Or do CDAs in ROM get transfered into RAM to run?

No.  A little more RAM will be taken up because the CDA list will be
larger (probably only 4 bytes per CDA).
-- 
David Empson

Internet: David.Empson@bbs.actrix.gen.nz    EMPSON_D@kosmos.wcc.govt.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand