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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | - | 1 | ;---------------------------------------------------------- |
| 2 | ; DIRP00.ASM |
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| 3 | ; PROGETTO: B1601 |
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| 4 | ; |
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| 5 | ; Variabili in Direct Page $00 |
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| 6 | ;---------------------------------------------------------- |
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| 7 | |||
| 8 | ; sezione COMMON -- questo permette di includere il file in piu' file |
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| 9 | |||
| 10 | .LIST on |
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| 11 | |||
| 12 | DIRP00: .SECTION page0, ref_only, common ;Direct-Page 00 |
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| 13 | |||
| 14 | .ABSOLUTE ;; inizia sempre da $00 |
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| 15 | .ORG 0x00 |
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| 16 | |||
| 17 | JiffyClk .DW ; contatore 10ms 32 bit |
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| 18 | .DW |
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| 19 | SysTmr .DS SYSTMRCNT ; system timer 0 (10ms) |
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| 20 | SysTMF .DS SYSTMRCNT ; flag timer (80 -> start) |
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| 21 | Bnk0Flag .DB ; <7>: flag test RAM banco 0 ok |
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| 22 | ; <6>: flag warm reset |
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| 23 | RTCFlag .DB |
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| 24 | |||
| 25 | diskstat .DS 2 ; flag device on ata bus #0 & #1 |
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| 26 | ; <7>: device ready |
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| 27 | ; <6>: compact flash device (C.F.) |
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| 28 | ; <5>: device identification ok |
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| 29 | ; <4>: MBR loaded |
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| 30 | ; <3>: valid signature in MBR |
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| 31 | ; <2>: first partition found&active |
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| 32 | ; <1>: |
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| 33 | ; <0>: valid partition flag |
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| 34 | |||
| 35 | ; <7>: device ready |
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| 36 | ; <6>: USB device |
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| 37 | ; <5>: compact flash device (C.F.) |
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| 38 | ; <4>: device identification ok |
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| 39 | ; <3>: MBR loaded |
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| 40 | ; <2>: first partition found&active |
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| 41 | ; <1>: always 1 |
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| 42 | ; <0>: valid partition flag |
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| 43 | |||
| 44 | |||
| 45 | atadev .EQU diskstat |
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| 46 | |||
| 47 | usbdev .DS 2 ; flag flash disk on usb bus #0 |
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| 48 | ; <7>: device plugged and ready |
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| 49 | ; <6>: always 1 |
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| 50 | ; <5>: device identification ok |
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| 51 | ; <4>: MBR loaded |
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| 52 | ; <3>: valid signature in MBR |
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| 53 | ; <2>: first partition found&active |
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| 54 | ; <1>: |
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| 55 | ; <0>: valid partition flag |
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| 56 | |||
| 57 | diskmax .DS 16 ; disk max. sector's |
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| 58 | atasec .EQU diskmax |
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| 59 | usbsec .EQU diskmax+8 |
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| 60 | |||
| 61 | |||
| 62 | atambr .DS 8 ; data for first partition found in mbr |
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| 63 | ; first 3 bytes for start sector of partition |
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| 64 | ; last byte for partition type |
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| 65 | usbmbr .DS 8 |
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| 66 | |||
| 67 | ataprt .DS 8 ; total sec's of first partition |
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| 68 | usbprt .DS 8 ; total sec's of first partition |
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| 69 | |||
| 70 | |||
| 71 | usb0ch .DB ; usb0 (ch375/ch376) flag |
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| 72 | ; <7>: module on |
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| 73 | ; <6>: ch376 flag |
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| 74 | ; <5:0>: chip version |
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| 75 | |||
| 76 | usb0st .DB ; usb0 status |
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| 77 | ; <7>: usb0 host mode ok |
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| 78 | ; <6>: flash disk attached flag |
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| 79 | ; <5>: usb device attached |
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| 80 | |||
| 81 | fdcdrv .DB ; phisycal drive status (drive #0) |
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| 82 | ; <7>: disk format established in bit 0&1 |
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| 83 | ; <6>: double step seek done |
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| 84 | ; <5>: trust format bit's (set after ok r/w) |
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| 85 | ; <4>: write protect bit (if disk in drive) |
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| 86 | ; <3>: don't care |
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| 87 | ; <2>: don't care |
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| 88 | ; <1>: HD disk if set else DD disk |
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| 89 | ; <0>: CBM format if set else IBM format |
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| 90 | |||
| 91 | vdrive .DB ; virtual drive status (ram disk, drive #1) |
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| 92 | ; <7>: disk format established in bit 0&1 |
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| 93 | ; <6>: change disk simulation (after format) |
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| 94 | ; <5>: don't care |
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| 95 | ; <4>: write protect bit (under sw control) |
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| 96 | ; <3>: don't care |
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| 97 | ; <2>: don't care |
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| 98 | ; <1>: HD disk if set else DD disk |
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| 99 | ; <0>: CBM format if set else IBM format |
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| 100 | |||
| 101 | fdcctl .DB ; fdc controller status |
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| 102 | ; <7>: drive is attached |
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| 103 | ; <6>: drive need recalibration (restore) |
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| 104 | ; <5>: FDC controller ok |
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| 105 | ; <4>: motor on |
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| 106 | ; <3>: dma is active |
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| 107 | ; <2>: dma chip ok (post routine) |
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| 108 | ; <1>: clock rate (1=HD,0=DD) |
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| 109 | ; <0>: disk ready |
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| 110 | |||
| 111 | fdctrk .DB ; fd: current seek track |
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| 112 | fdcerr .DB ; fd: last error code |
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| 113 | ataerr .DB ; ata: last error code |
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| 114 | ataxer .DB ; ata: last extended error code |
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| 115 | |||
| 116 | CtrlBrk .DB ; flag CTRL+BREAK (NMI) |
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| 117 | |||
| 118 | MemTop .DW ; top memoria RAM |
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| 119 | .DB ; banco top mem |
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| 120 | |||
| 121 | DflTxtIn .DB ; device di default text input |
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| 122 | DflTxtOut .DB ; device di default text output |
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| 123 | |||
| 124 | COPPtr LP ; long pointer for COP decoding |
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| 125 | COPIdx .DB ; COP signature/index |
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| 126 | |||
| 127 | BiosEnt .DB ; flag accesso a bios setup |
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| 128 | |||
| 129 | ; variabili utilizzate da ACIA |
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| 130 | spwrk .DS $30 |
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| 131 | |||
| 132 | ; bios mem |
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| 133 | nsize .DW ; dimensione blocco da allocare |
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| 134 | ;bsize .DW ; dimensione vera blocco free |
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| 135 | splitsz .DW ; dimensione blocco splittato |
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| 136 | bfree .DW ; puntatore blocco free |
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| 137 | hdrptr .DW ; puntatore header heap |
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| 138 | |||
| 139 | pbrklv .DW ; current break level of current process |
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| 140 | pbrkmin .DW ; minimum breal level of current process |
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| 141 | pbrkmax .DW ; maximum breal level of current process |
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| 142 | |||
| 143 | ; bios temp. work area |
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| 144 | bwrktmp .DS $28 |
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| 145 | |||
| 146 | coptmp .DB ; temp. used while cop |
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| 147 | |||
| 148 | tstser .DB ; check ser/usb test board post |
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| 149 | ; <7>: VIA2 ok |
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| 150 | ; <6>: PICRAM ok |
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| 151 | ; <1>: UART 16C550 ok |
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| 152 | ; <0>: R65C51 ok |
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| 153 | |||
| 154 | |||
| 155 | ;crc16 .DW |
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| 156 | |||
| 157 | .RELATIVE |
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| 158 | |||
| 159 | .ENDS |
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| 160 | |||
| 161 | .IFDEF _ACIA_INC_ |
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| 162 | .INCLUDE INC\SP.INC |
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| 163 | .ENDIF |
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| 164 | |||
| 165 | .LIST off |