mirror of
https://github.com/fadden/6502bench.git
synced 2024-08-16 00:28:56 +00:00
36 lines
1.4 KiB
Plaintext
36 lines
1.4 KiB
Plaintext
|
; Copyright 2018 faddenSoft. All Rights Reserved.
|
||
|
|
; See the LICENSE.txt file for distribution terms (Apache 2.0).
|
||
|
|
;
|
||
|
|
; Sources:
|
||
|
|
; Various Apple II reference materials found online
|
||
|
|
|
||
|
|
*SYNOPSIS C08x I/O locations for the Disk ][
|
||
|
|
|
||
|
|
; Disk ][ I/O base address locations.
|
||
|
|
;
|
||
|
|
; A few things hard-code slot 6 for disk access, in which case addresses
|
||
|
|
; like $C0E8 will work here. It's far more common for code to use indexed
|
||
|
|
; addressing like "LDA $C088,X", which clashes with the slot 0
|
||
|
|
; definitions for the language card. SourceGen doesn't distinguish
|
||
|
|
; between direct and indexed access to a location when resolving platform
|
||
|
|
; symbols, so you can have one or the other.
|
||
|
|
;
|
||
|
|
; Other peripherals may use a similar system of indexing, so it's useful
|
||
|
|
; to have each in a separate file.
|
||
|
|
IWM_PH0_OFF @ $C080 ;IWM phase 0 off
|
||
|
|
IWM_PH0_ON @ $C081 ;IWM phase 0 on
|
||
|
|
IWM_PH1_OFF @ $C082 ;IWM phase 1 off
|
||
|
|
IWM_PH1_ON @ $C083 ;IWM phase 1 on
|
||
|
|
IWM_PH2_OFF @ $C084 ;IWM phase 2 off
|
||
|
|
IWM_PH2_ON @ $C085 ;IWM phase 2 on
|
||
|
|
IWM_PH3_OFF @ $C086 ;IWM phase 3 off
|
||
|
|
IWM_PH3_ON @ $C087 ;IWM phase 3 on
|
||
|
|
IWM_MOTOR_OFF @ $C088 ;IWM motor off
|
||
|
|
IWM_MOTOR_ON @ $C089 ;IWM motor on
|
||
|
|
IWM_DRIVE_1 @ $C08A ;IWM select drive 1
|
||
|
|
IWM_DRIVE_2 @ $C08B ;IWM select drive 2
|
||
|
|
IWM_Q6_OFF @ $C08C ;IWM read
|
||
|
|
IWM_Q6_ON @ $C08D ;IWM WP-sense
|
||
|
|
IWM_Q7_OFF @ $C08E ;IWM WP-sense/read
|
||
|
|
IWM_Q7_ON @ $C08F ;IWM write
|