Re: Apple IIGS bank latching

["Marc S. Ressl" <mressl@gmail.com>]

On 5 mar, 19:22, Antoine Vignau <antoine.vig...@laposte.net> wrote:
> On 5 mar, 23:15, Antoine Vignau <antoine.vig...@laposte.net> wrote:
>
> > Tested on a real ROM 3
>
> > Ah, better ;-)
>
> > * E1
>
> > antoine
>
> > ps. FF/D000: 6F
>
> Same results on a ROM 01:
> * E1
> * 6F
> * 6F
> * crash
> * E1
>
> BTW, replaced 25 (AND dp) with 29 (AND imm) ;-)

Whoops, my bad :-).

Thanks a lot for all the results. I am still surprised by that last
one!

Some more tests (pretty please with sugar on top):

(5) Is aux/main memory switching enabled for all even banks or just
bank 0?
CALL-151
02/1000:02
03/1000:03
00/0100:8D 03 C0 AF 00 10 02 8D 20 01 8D 02 C0 60
00/0100G
00/0120
What do you see, 02 or 03?

(6) In case the last experiment returned 03, is aux/main memory
switching enabled for all even banks, if the shadowing is enabled for
all banks?

CALL-151
02/1000:02
03/1000:03
00/0100:A9 90 8D 36 C0 8D 03 C0 AF 00 10 02 8D 20 01 8D 02 C0 60
00/0100G
00/0120
What do you see, 02 or 03?

(7) This is a test of linearized video memory.

E0/0:0
1<0.BFFFM
1900:19
2000:12 34
2080:56 78
9D00:9D
9E00:9E
9F00:9F
A000:A0
C029:41
1900
2000.2007
2080.2087
20a0.20a7
9d00
9e00
9f00
a000

What do you see?

Again, thanks a lot!

With the best wishes,

Marc.-