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add 500 banking notes

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Joshua Bell 2021-11-14 10:32:55 -08:00
parent a99580691f
commit 707cd006fd
1 changed files with 37 additions and 0 deletions
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notes_500_banking.txt Normal file
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The ACE 500 has a single 32k ROM, with different parts
banked in dynamically.
__Offsets ___
$0000 - $00FF - (empty)
$0100 - $0200 - Serial port firmware???
$0200 - $04FF - (empty)
$0500 - $05FF - ???
$0600 - $07FF - (empty)
$0800 - $0FFF - Firmware ??? (note: fragments of source code in padding)
$1000 - $17FF - (empty)
$1800 - $1FFF - Serial firmware? ("ACE 500 TERMINAL MODE")
$2000 - $23FF - (empty)
$2400 - $24FF - ??? Mapped into $C4 ???
$2500 - $25FF - (empty)
$2600 - $26FF - ???
$2700 - $2FFF - (empty)
$3000 - $32FF - ???
$3300 - $33FF - ???
$3400 - $35FF - ???
$3600 - $37FF - ???
$3800 - $3FFF - (empty)
$4000 - $40FF - (empty)
$4100 - $41FF - Parallel Firmware - Mapped into $C1
$4200 - $42FF - Serial Firmware - Mapped into $C2
$4300 - $43FF - 80 Column Firmware - Mapped into $C3
$4400 - $44FF - ???
$4500 - $45FF - ???
$4600 - $46FF - Disk II Firmware - Mapped into $C6
$4700 - $47FF - ???
$4800 - $4FFF - 80 Column Firmware - Mapped into $C8-$CF (incl. source code)
$5000 - $77FF - Applesoft BASIC - Mapped into $D0-$F7
$7800 - $7FFF - Monitor ROM - Mapped into $F8-$FF