mirror of
https://github.com/wwarthen/RomWBW.git
synced 2026-02-06 14:11:48 -06:00
6f16fdc9d5
Updated SIO driver to handle multiple SIO modules w/ auto-detect and protection for phantom ports.
20 lines
818 B
PHP
20 lines
818 B
PHP
;
|
|
; ZETA 2 HARDWARE DEFINITIONS
|
|
;
|
|
SBC_BASE .EQU $60 ; I/O BASE ADDRESS FOR ONBOARD PERIPHERALS
|
|
;
|
|
MPGSEL_0 .EQU SBC_BASE + $18 ; BANK_0 PAGE SELECT REGISTER (WRITE ONLY)
|
|
MPGSEL_1 .EQU SBC_BASE + $19 ; BANK_1 PAGE SELECT REGISTER (WRITE ONLY)
|
|
MPGSEL_2 .EQU SBC_BASE + $1A ; BANK_2 PAGE SELECT REGISTER (WRITE ONLY)
|
|
MPGSEL_3 .EQU SBC_BASE + $1B ; BANK_3 PAGE SELECT REGISTER (WRITE ONLY)
|
|
MPGENA .EQU SBC_BASE + $1C ; PAGING ENABLE REGISTER - BIT 0 = 1 (WRITE ONLY)
|
|
;
|
|
RTC .EQU SBC_BASE + $10 ; ADDRESS OF RTC LATCH AND INPUT PORT
|
|
PPIBASE .EQU SBC_BASE + $00 ; PPI 82C55 I/O IS DECODED TO PORT 60-67
|
|
;
|
|
CTCBASE .EQU $20 ; CTC BASE I/O ADDRESS
|
|
CTCA .EQU CTCBASE + 0 ; CTC CHANNEL A
|
|
CTCB .EQU CTCBASE + 1 ; CTC CHANNEL B
|
|
CTCC .EQU CTCBASE + 2 ; CTC CHANNEL C
|
|
CTCD .EQU CTCBASE + 3 ; CTC CHANNEL D
|