Caple C871i Manual do Utilizador descarregar pdf (Página 286)

100

101

Apple II Computer Info

The "write enable" locations ($C081, $C083, $C089 and $C08B) require a

special sequence to enable write access. Two or more consecutive READ

accesses to the location are required to enable writes (e.g. two LDA

instructions).

The current state of these soft-switches can be detected on the IIe by

reading bit 7 of the following locations:

$C011 Read bank 2 select state (set for bank 2, clear for bank 1)

$C012 Read RAM read enable state (set for RAM read, clear for ROM read)

It is not possible to read the write-enable state of the language card RAM.

David Empson

[email protected]

Snail mail: P.O. Box 27-103, Wellington, New Zealand

###################################################### E N D O F F I L E

### memswitches

###################################################### E N D O F F I L E

Apple II Computer Technical Information : Apple II Family Hardware Info

ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 286 of 572

1 2 ... 281 282 283 284 285 286 287 288 289 290 291 ... 571 572

Comentários a estes Manuais

Sem comentários

Caple C871i Manual do Utilizador Página 286

Comentários a estes Manuais

Manuais e produtos relacionados com Fogões Caple C871i