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annotate 3rdparty/roms/dos/SuperDos/dgndefs.asm @ 2320:3584407fea59

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Fixed term_scdwt.dt to have $FF00 as address
author boisy
date Tue, 05 Jan 2010 21:20:06 +0000
parents 4037b23c848d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1985
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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1 *
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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2 * Deinitions for ports on Dragon 32/64/Alpha.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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3 *
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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4 * 2004-11-16. P.Harvey-Smith.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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5 * Fixed the stupid error I made in the defines below
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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6 * that made all the non DPxxxxx defines equal to FF00 !!!
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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7 *
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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8 * 2004-10-10. P.Harvey-Smith.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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9 * Tidyed up a little, moved romdefs into their own file.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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10 *
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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11
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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12 IO equ $ff00 ; IO page on Dragon
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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13
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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14 *
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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15 * Most of these symbols will be defined twice, as some
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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16 * of the Dragon code, sets DP=$FF, and uses direct page
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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17 * addressing to access the io ports, whilst some of it
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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18 * uses absolute addressing.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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19 * The versions starting DP must be used with DP=$FF.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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20 *
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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21
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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22 *Pia 0 and 1 standard on all Dragons.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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23
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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24 DPPIA0DA EQU $00 ; Side A Data/DDR
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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25 DPPIA0CRA EQU $01 ; Side A Control.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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26 DPPIA0DB EQU $02 ; Side B Data/DDR
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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27 DPPIA0CRB EQU $03 ; Side B Control.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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28
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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29 PIA0DA EQU DPPIA0DA+IO ; Side A Data/DDR
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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30 PIA0CRA EQU DPPIA0CRA+IO ; Side A Control.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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31 PIA0DB EQU DPPIA0DB+IO ; Side A Data/DDR
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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32 PIA0CRB EQU DPPIA0CRB+IO ; Side A Control.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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33
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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34 DPPIA1DA EQU $20 ; Side A Data/DDR
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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35 DPPIA1CRA EQU $21 ; Side A Control.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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36 DPPIA1DB EQU $22 ; Side B Data/DDR
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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37 DPPIA1CRB EQU $23 ; Side B Control.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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38
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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39 PIA1DA EQU DPPIA1DA+IO ; Side A Data/DDR
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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40 PIA1CRA EQU DPPIA1CRA+IO ; Side A Control.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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41 PIA1DB EQU DPPIA1DB+IO ; Side A Data/DDR
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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42 PIA1CRB EQU DPPIA1CRB+IO ; Side A Control.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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43
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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44 * Dragon Alpha has a third PIA at FF24.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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45
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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46 DPPIA2DA EQU $24 ; Side A Data/DDR
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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47 DPPIA2CRA EQU $25 ; Side A Control.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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48 DPPIA2DB EQU $26 ; Side B Data/DDR
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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49 DPPIA2CRB EQU $27 ; Side B Control.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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50
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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51 PIA2DA EQU DPPIA2DA+IO ; Side A Data/DDR
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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52 PIA2CRA EQU DPPIA2CRA+IO ; Side A Control.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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53 PIA2DB EQU DPPIA2DB+IO ; Side A Data/DDR
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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54 PIA2CRB EQU DPPIA2CRB+IO ; Side A Control.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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55
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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56 ;WD2797 Floppy disk controler, used in Alpha Note registers in reverse order !
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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57 DPCmdRegA EQU $2F ; command/status
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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58 DPTrkRegA EQU $2E ; Track register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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59 DPSecRegA EQU $2D ; Sector register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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60 DPDataRegA EQU $2C ; Data register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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61
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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62 CmdRegA EQU DPCMDREGA+IO ; command/status
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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63 TrkRegA EQU DPTRKREGA+IO ; Track register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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64 SecRegA EQU DPSECREGA+IO ; Sector register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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65 DataRegA EQU DPDATAREGA+IO ; Data register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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66
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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67 ; Constants for Alpha AY-8912 sound chip, which is used to control
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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68 ; Drive select and motor on the Alpha
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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69
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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70 AYIOREG EQU $0E ; AY-8912, IO Register number.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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71 AYIdle EQU $00 ; Make AY Idle.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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72 AYWriteReg EQU $01 ; Write AY Register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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73 AYReadReg EQU $02 ; Read AY Register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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74 AYREGLatch EQU $03 ; Latch register into AY
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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75
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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76 DSMask EQU $03 ; Drive select mask.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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77 MotorMask EQU $04 ; Motor enable mask
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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78 DDENMask EQU $08 ; DDEN Mask
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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79 ENPMask EQU $10 ; Enable Precomp mask
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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80 NMIMask EQU $20 ; NMI enable Mask
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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81
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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82 ; Dragon 64/Alpha Serial port.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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83 DPAciaData EQU $04 ; Acia Rx/Tx Register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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84 DPAciaStat EQU $05 ; Acia status register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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85 DPAciaCmd EQU $06 ; Acia command register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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86 DPAciaCtrl EQU $07 ; Acia control register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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87
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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88 AciaData EQU DPAciaData+IO ; Acia Rx/Tx Register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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89 AciaStat EQU DPAciaStat+IO ; Acia status register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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90 AciaCmd EQU DPAciaCmd+IO ; Acia command register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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91 AciaCtrl EQU DPAciaCtrl+IO ; Acia control register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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92
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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93 ; Dragon Alpha Modem port (6850)
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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94
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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95 DPModemCtrl EQU $28 ; Modem Control/Status
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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96 DPModemData EQU $29 ; Modem Rx/Tx Data
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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97
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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98 ModemCtrl EQU ModemCtrl+IO ; Modem Control/Status
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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99 ModemData EQU ModemData+IO ; Modem Rx/Tx Data
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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100
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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101 ;DragonDos Cartrage IO for WD2797
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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102
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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103 ;WD2797 Floppy disk controler, used in DragonDos.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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104 DPCmdRegD EQU $40 ; command/status
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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105 DPTrkRegD EQU $41 ; Track register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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106 DPSecRegD EQU $42 ; Sector register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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107 DPDataRegD EQU $43 ; Data register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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108
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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109 CmdRegD EQU DPCMDREGD+IO ; command/status 4
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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110 TrkRegD EQU DPTRKREGD+IO ; Track register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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diff changeset
111 SecRegD EQU DPSECREGD+IO ; Sector register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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112 DataRegD EQU DPDATAREGD+IO ; Data register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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113
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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114 DPDSKCTLD EQU $48 ; Disk DS/motor control reg
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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115 DSKCTLD EQU DPDSKCTL+IO
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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116
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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117 ; Disk IO bitmasks (DragonDos).
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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118
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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119 NMIEnD EQU %00100000
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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120 WPCEnD EQU %00010000
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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121 SDensEnD EQU %00001000
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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122 MotorOnD EQU %00000100
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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123 Drive0D EQU %00000000
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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124 Drive1D EQU %00000001
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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125 Drive2D EQU %00000010
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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126 Drive3D EQU %00000011
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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127 DriveMaskD EQU %00000011 ; Mask to extract drives
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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128
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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129 ; Disk IO bitmasks (Dragon Alpha).
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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130
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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131 ;NMIEnA EQU %10000000 ; This is just a guess, but in current code just used as a flag
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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132 Drive5or8 EQU %10000000 ; is drive in 5" or 8" mode Acording to circuit trace on R.Harding's machine
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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133 WPCEnA EQU %01000000 ; Acording to circuit trace by R.Harding.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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134 SDensEnA EQU %00100000 ; DDen Acording to circuit trace on R.Harding's machine
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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135 MotorOnA EQU %00010000
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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diff changeset
136 Drive0A EQU %00000001 ; Drive selects acording to OS9 headers
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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137 Drive1A EQU %00000010
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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138 Drive2A EQU %00000100
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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139 Drive3A EQU %00001000
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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140 DriveMaskA EQU %00001111 ; Mask to extract drives
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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141
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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142 ; On the Alpha, NMI is enabled/disabled by setting CA2 of the third PIA, High=enabled.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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143
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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144 ;WD1793/1772 Floppy disk controler, used in RS-DOS.
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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145 DPCmdRegT EQU $48 ; command/status
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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146 DPTrkRegT EQU $49 ; Track register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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147 DPSecRegT EQU $4A ; Sector register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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148 DPDataRegT EQU $4B ; Data registerT
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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149
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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150 CmdRegT EQU DPCMDREGT+IO ; command/status 4
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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151 TrkRegT EQU DPTRKREGT+IO ; Track register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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152 SecRegT EQU DPSECREGT+IO ; Sector register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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153 DataRegT EQU DPDATAREGT+IO ; Data register
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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154
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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155 DPDSKCTLT EQU $40 ; Disk DS/motor control reg
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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156 DSKCTLT EQU DPDSKCTLT+IO
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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157
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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158 ; Disk IO bitmasks (RSDos FD-500).
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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159
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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160 HaltEn EQU %10000000 ; Halt enable
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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161 SS0 EQU %01000000 ; Side select
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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162 SDensEnT EQU %00100000 ; Double density enable
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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163 NMIEnT EQU %00100000 ; Enable NMI, always enabled when in DD mode
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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164 WPCEnT EQU %00010000
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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165 MotorOnT EQU %00001000 ; Drive selects only 3
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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166 Drive0T EQU %00000001
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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167 Drive1T EQU %00000010
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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168 Drive2T EQU %00000100
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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169 Drive3T EQU %00000100 ; Drive 3 same as drive 2 !
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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170 DriveMaskT EQU %00000111 ; Mask to extract drives
4037b23c848d SuperDos rom, assembalable for Dragon Dos, Dragon Alpha or RS-DOS
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171 DriveOffMaskT EQU MotorOnT+DriveMaskT