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24 lines
906 B
24 lines
906 B
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; N8 HARDWARE DEFINITIONS
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;
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RAMBIAS .EQU 0 ; RAM STARTS AT 0K
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;
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N8_BASE .EQU $80 ; I/O BASE ADDRESS FOR ONBOARD PERIPHERALS
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;
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N8_PPI0 .EQU N8_BASE + $00 ; FIRST PARALLEL PORT
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N8_PPI1 .EQU N8_BASE + $04 ; SECOND PARALLEL PORT
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N8_RTC .EQU N8_BASE + $08 ; RTC LATCH AND BUFFER
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N8_FDC .EQU N8_BASE + $0C ; FLOPPY DISK CONTROLLER
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N8_UTIL .EQU N8_BASE + $10 ; FLOPPY DISK UTILITY
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N8_ACR .EQU N8_BASE + $14 ; AUXILLARY CONTROL REGISTER
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N8_RMAP .EQU N8_BASE + $16 ; ROM PAGE REGISTER
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N8_VDP .EQU N8_BASE + $18 ; VIDEO DISPLAY PROCESSOR (TMS9918A)
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N8_PSG .EQU N8_BASE + $1C ; PROGRAMMABLE SOUND GENERATOR (AY-3-8910)
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;
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N8_DEFACR .EQU $1B ; DEFAULT VALUE FOR ACR REGISTER
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;
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RTC .EQU N8_RTC ; GENERIC ALIAS FOR RTC PORT
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PPIBASE .EQU N8_PPI0 ; GENERIC ALIAS FOR PRIMARY PARALLEL PORT
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;
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Z180_BASE .EQU $40 ; I/O BASE ADDRESS FOR INTERNAL Z180 REGISTERS
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#INCLUDE "z180.inc"
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