mirror of
https://github.com/fadden/6502bench.git
synced 2024-10-10 04:23:44 +00:00
30 lines
654 B
Plaintext
30 lines
654 B
Plaintext
|
; Copyright 2018 David Schmidt. All Rights Reserved.
|
||
|
; See the LICENSE.txt file for distribution terms (Apache 2.0).
|
||
|
;
|
||
|
; Adapted from Apple /// reference materials
|
||
|
;
|
||
|
|
||
|
*SYNOPSIS Symbols from hardware I/O areas
|
||
|
|
||
|
KBD @ $C000 ;last key pressed + 128
|
||
|
|
||
|
; Other hardware registers
|
||
|
Z_REG @ $FFD0
|
||
|
D_DDRB @ $FFD2
|
||
|
D_DDRA @ $FFD3
|
||
|
TIMER1L @ $FFD8
|
||
|
TIMLATCH @ $FFD9
|
||
|
D_ACR @ $FFDB
|
||
|
D_PCR @ $FFDC
|
||
|
D_IFR @ $FFDD
|
||
|
D_IER @ $FFDE
|
||
|
E_REG @ $FFDF ;environment register (r/w)
|
||
|
E_IORB @ $FFE0
|
||
|
E_DDRB @ $FFE2
|
||
|
E_DDRA @ $FFE3
|
||
|
E_ACR @ $FFEB
|
||
|
E_PCR @ $FFEC
|
||
|
E_IFR @ $FFED
|
||
|
E_IER @ $FFEE
|
||
|
B_REG @ $FFEF
|