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| From: Richard Atkinson
Date: 2000-11-14
Subject: Re: 364 O.S.
|
On Mon, 13 Nov 2000 suto@bekes.hungary.net wrote:
> Yes. I'm currently working on commenting the disassembled list of the
> speech ROM. (Thanx Ati!)
This will be most interesting to compare with the C64 Magic Voice ROM,
which is also on Funet.
> No. The 364's spk ROM is the 4. ROM bank low, the high one is empty. (I
> think.) The first ROM bank low is the same as plus4 basic ROM, the high
> one is the proto-ted-kernal.
Is it definitely that slot in the original V364? From my experiments with the 3 plus 1 ROMs, there seems to be some kind of slot-independant code in the OS which recognises auto-starting ROMs and executes their code regardless of which slot they're in.
Slot Low bank ($8000 - $BFFF) High bank ($C000 - $FFFF)
0 BASIC KERNAL
1 3 plus 1 LO 3 plus 1 HI
2 (game - eg. Jack Attack) (game? Any 32K games?)
3 Speech ROM blank
On all machines, slots 2 and 3 chip selects (both low and high) are available on the edge connector. Slot 1 is not there, so the best way to add 3 plus 1 (if for some reason you'd ever want to) to a C16 is to do an internal mod. However, it runs fine from Slot 2 in a game cartridge. The SYS address on the F-key is slightly different. You can even plug such a cartridge into a plus/4 and have two copies of 3 plus 1 on F1 and F2 with different run addresses.
All of this means a V364-compatible speech cartridge for other 264 series machines might just be possible.
Richard
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