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25 lines
891 B
25 lines
891 B
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; N8VEM HARDWARE IO PORT ADDRESSES AND MEMORY LOCATIONS
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RTC .EQU $70 ; ADDRESS OF RTC LATCH AND INPUT PORT
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; MEMORY BANK CONFIGURATION
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BID_ROM0 .EQU $00
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BID_ROMN .EQU (BID_ROM0 + ((ROMSIZE / 32) - 1))
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BID_RAM0 .EQU $80
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BID_RAMN .EQU (BID_RAM0 + ((RAMSIZE / 32) - 1))
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BID_BOOT .EQU BID_ROM0 ; BOOT BANK
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BID_BIOSIMG .EQU BID_ROM0 + 1 ; BIOS IMAGE BANK
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BID_OSIMG .EQU BID_ROM0 + 2 ; ROM LOADER AND IMAGES BANK
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BID_FSFAT .EQU BID_ROM0 + 3 ; FAT FILESYSTEM DRIVER BANK
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BID_ROMD0 .EQU BID_ROM0 + 4 ; FIRST ROM DRIVE BANK
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BID_ROMDN .EQU BID_ROMN ; LAST ROM DRIVE BANK
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BID_RAMD0 .EQU BID_RAM0 ; FIRST RAM DRIVE BANK
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BID_RAMDN .EQU BID_RAMN - 4 ; LAST RAM DRIVE BANK
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BID_AUX .EQU BID_RAMN - 3 ; AUX BANK (BPBIOS, ETC.)
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BID_BIOS .EQU BID_RAMN - 2 ; BIOS BANK
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BID_USR .EQU BID_RAMN - 1 ; USER BANK (CP/M TPA, ETC.)
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BID_COM .EQU BID_RAMN ; COMMON BANK, UPPER 32K
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