135 lines
3.6 KiB
ArmAsm
135 lines
3.6 KiB
ArmAsm
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;
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; Names of hardware registers
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;
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; See https://github.com/MEGA65/mega65-core/blob/master/iomap.txt
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;
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!ifdef CONFIG_MB_M65 {
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; VIC-IV registers
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!addr VIC_KEY = $D02F
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!addr VIC_CTRLA = $D030
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!addr VIC_CTRLB = $D031
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!addr VIC_XPOS = $D050
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!addr VIC_CTRLC = $D054
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!addr VIC_CHARSTEP = $D058 ; 2 bytes - logical characters per line
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!addr VIC_SRH = $D05D ; - various flags, bit 7 = hot registers
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!addr VIC_SCRNPTR = $D060 ; 4 bytes - pointer to start of screen memory
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!addr VIC_COLPTR = $D064 ; 2 bytes - pointer to start of color memory
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!addr VIC_CHARPTR = $D068 ; 3 bytes - pointer to start of character generator
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!addr VIC_PALSEL = $D070 ; - palette selection register
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; Floppy controller registers
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!addr FDC_CONTROL = $D080
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!addr FDC_COMMAND = $D081
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!addr FDC_STATUS_A = $D082
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!addr FDC_STATUS_B = $D083
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!addr FDC_TRACK = $D084
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!addr FDC_SECTOR = $D085
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!addr FDC_SIDE = $D086
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!addr FDC_DATA = $D087
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!addr FDC_CLOCK = $D088
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!addr FDC_STEP = $D089
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!addr FDC_PCODE = $D08A
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!addr FDC_DBG0 = $D6A0
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!addr FDC_DBG1 = $D6A1
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!addr FDC_DATARATE = $D6A2
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!addr FDC_LAST_TRACK = $D6A3
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!addr FDC_LAST_SECTOR = $D6A4
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!addr FDC_LAST_SIODE = $D6A5
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; Palette memory areas
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!addr PALETTE_R = $D100
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!addr PALETTE_G = $D200
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!addr PALETTE_B = $D300
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; Keyboard
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!addr C65_EXTKEYS_PR = $D607
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!addr C65_EXTKEYS_DDR = $D608
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!addr KBSCN_BUCKY = $D611
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!addr KBSCN_PEEK = $D613
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!addr KBSCN_SELECT = $D614
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; SD card
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!addr SD_CTL = $D680
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!addr SD_ADDR = $D681 ; 4 bytes
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!addr SD_BUFCTL = $D689
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!addr SD_ERRCODE = $D6DA
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; SD card sector buffer, $FFFD6E00
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!set SD_SECBUF_0 = $00
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!set SD_SECBUF_1 = $6E
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!set SD_SECBUF_2 = $FD
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!set SD_SECBUF_3 = $0F
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; DMAgic
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!addr DMA_ADDRLSBTRIG = $D700
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!addr DMA_ADDRMSB = $D701
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!addr DMA_ADDRBANK = $D702
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!addr DMA_EN018B = $D703
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!addr DMA_ADDRMB = $D704
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!addr DMA_ETRIG = $D705
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!addr DMA_ADDRLSB = $D70E
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; MISC registers
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!addr MISC_M65MODEL = $D629 ; board identification byte
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!addr MISC_EMU = $D710 ; to enable badlines and slow interrupts
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; Hypervisor traps
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!addr HTRAP00 = $D640
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; SID offsets
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!set __SID_R1_OFFSET = $00 ; right SID 1, $D400
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!set __SID_R2_OFFSET = $20 ; right SID 2, $D420
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!set __SID_L1_OFFSET = $40 ; left SID 1, $D440
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!set __SID_L2_OFFSET = $60 ; left SID 2, $D460
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; SD card commands
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;
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; XXX command codes taken from XEMU emulator, to be updated when official documentation exists
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!set CARD_CMD_RESET = $00 ; reset SD card
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!set CARD_CMD_RESET_FL = $10 ; reset with flags, XXX what's this?
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!set CARD_CMD_END_RESET = $01 ; end reset
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!set CARD_CMD_END_RESET_FL = $11 ; end reset with flags
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!set CARD_CMD_READ = $02 ; read sector
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!set CARD_CMD_WRITE = $03 ; write sector
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!set CARD_CMD_WRITE_1 = $04 ; multi-sector write, 1st sector
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!set CARD_CMD_WRITE_2 = $05 ; multi-sector write
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!set CARD_CMD_WRITE_3 = $06 ; multi-sector write, last sector
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!set CARD_CMD_FLUSH = $0C
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!set CARD_CMD_SDHC_OFF = $40 ; for older cores only?
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!set CARD_CMD_SDHC_ON = $41 ; for older cores only?
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; XXX $44, $45 - completely unclear to me
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!set CARD_CMD_MAP_BUF = $81
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!set CARD_CMD_UNMAP_BUF = $82
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!set CARD_CMD_FILL_ON = $83
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!set CARD_CMD_FILL_OFF = $84
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!set CARD_CMD_SELECT_INT = $C0 ; select internal slot
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!set CARD_CMD_SELECT_EXT = $C1 ; select external slot
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}
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