Atari 130XE Uživatelský manuál stáhnout pdf (Strana 60)

8 For experts: Technical details

8.6.2.2 Additional registers in OSS mode

$D500. . . $D50F: OSS Bank Select (r/w)

7 6 5 4 3 2 1 0

- - - - - - - -

These registers implement the bank select and cart disable as in OSS modules of type“M091”.

A read or write access to the respective address activates the following conﬁguration.

$D500 Module enabled, $A000. . . $AFFF bank 1, $B000. . . $BFFF bank 0

$D501 Module enabled, $A000. . . $AFFF bank 3, $B000. . . $BFFF bank 0

$D508 Module disabled

$D509 Module enabled, $A000. . . $AFFF bank 2, $B000. . . $BFFF bank 0

8.6.2.3 Additional registers in AtariMax mode

$D500. . . $D57F: Bank Select (r/w)

7 6 5 4 3 2 1 0

- - - - - - - -

A read or write access to this area activates the module and selects the bank. An access

to address $D500 selects bank 0, $D501 selects bank 1, . . . , $D57F selects bank 127.

$D580: Cart Disable (r/w)

7 6 5 4 3 2 1 0

- - - - - - - -

A read or write access to this register disables the module.

Caution:

In the original AtariMax module the addresses $D581. . . $D5FF can also be

used to disable the module. The cartridge emulation only oﬀers this single address for this.

1 2 ... 55 56 57 58 59 60 61 62 63 64

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Atari 130XE Uživatelský manuál Strana 60