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139 lines
4.9 KiB
139 lines
4.9 KiB
;================ Disk Parameter Blocks, Fixed Formats ====================
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; Generic File.
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;
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; 1.0 - 31 Aug 92 - General Release. HFB
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; 0.1 - 3 Jan 92 - Initial Release. HFB
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;::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
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; This file is used to define a fixed format for physical drives when No
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; Autoselection is desired. Select the format(s) to remain resident in the
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; executable code, delete the remaining to save space, and modify the DPH.LIB
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; file to associate the drive DPHs to the DPB format data contained here.
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; The B/P BIOS DPB's contain prefix information that furnish
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; information on the format. Since there is no "Native" format,
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; each format MUST have these headers.
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; FORMAT TYPE BYTE 0
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; ------------------
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; D D D D D D D D
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; 7 6 5 4 3 2 1 0
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; | | | | | +-+-+--- Disk Size: 000=Fixed Disk, 001=8", 010=5.25", 011=3.5"
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; | | +-+-+--------- Track Type: 000 = Single-Sided 001 = (reserved)
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; | | 010 = Sel by Sctr, Cont 011 = Sel by Sctr, Sec # Same
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; | | 100 = S0 All, S1 All 101 = S0 All,S1 All Rev
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; | | 110 = Sel by Trk LSB 111 = (reserved)
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; | +--------------- Track 0 Side 0: 0 = Double-Density, 1 = Single-Density
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; +----------------- 0 = Double-Density, 1 = Single-Density
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FIXDSK EQU 00000000B
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DSK8 EQU 00000001B
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DSK5 EQU 00000010B
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DSK3 EQU 00000011B
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SS EQU 00000000B
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TSBSC EQU 00010000B ; Side Select by Sector Number, Cont Sect #
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TSBSS EQU 00011000B ; Side Select by Sector Number, Same Sect #
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TSBTM EQU 00100000B ; Side Select by Track - S0 All, S1 All
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TSBTMR EQU 00101000B ; Side Select by Track - S0 All, S1 All Rev
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TSBTL EQU 00110000B ; Side Select by Track LSB
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T0S0SD EQU 01000000B
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DD EQU 00000000B
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SD EQU 10000000B
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; Format Type Byte 1
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; ------------------
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; D D D D D D D D
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; 7 6 5 4 3 2 1 0
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; | | | | | +-+-+--- Sector Size: 000=128, 001=256, 010=512, 011=1024 bytes
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; | | +-+-+--------- Alloc Size: 000=1K, 001=2K, 010=4K, 011=8K, 100=16K
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; | +--------------- (reserved)
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; +----------------- 0 = Normal 5.25" Speed, 1 = 8" or Hi-Density Floppy
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SEC128 EQU 00000000B
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SEC256 EQU 00000001B
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SEC512 EQU 00000010B
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SEC1K EQU 00000011B
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ALC1K EQU 00000000B
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ALC2K EQU 00001000B
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ALC4K EQU 00010000B
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ALC8K EQU 00011000B
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ALC16K EQU 00100000B
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SPEED5 EQU 00000000B
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SPEED8 EQU 10000000B
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; Notes on Skew Factors: Sector Skew may be calculated or may be looked
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; up using a Lookup Table. This is an Assembly-time Option. The Format
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; routines, however, need to have a Skew Factor entry for the purpose of
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; formatting. If this Skew Factor is Negative, This indicates that the
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; Sector Numbers on the Disk are to be Skewed by ABS(Skew) at format time.
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; When calculating Skew for Read/Write, a Negative Number indicates the
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; Sectors are to be Read without Skew Translation.
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CSEG
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;.....
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; DS/QD AMPRO/SB180/ON
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DEFB 'Ampro DSQ','D'+80H ; Id - 10 bytes
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DEFB DSK5+DD+TSBTL ; Format type byte 0
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DEFB SPEED5+SEC1K+ALC2K ; Format type byte 1
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DEFB -2 ; Skew factor
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DEFB 17 ; Starting sector number
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DEFB 5 ; Physical sectors per track
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DEFB 80 ; Physical tracks/side
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DPBRA: DEFW 40 ; Sectors per track
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DEFB 4 ; Block shift factor
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DEFB 15 ; Block mask
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DEFB 0 ; Extent mask
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DEFW 394 ; Disk size-1
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DEFW 255 ; Directory max
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DEFB 0F0H, 0 ; Alloc 0,1
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DEFW 64 ; Check size
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DEFW 2 ; Track offset
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IF NOT CALCSK
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; NOTE: Sectors are Physical Size, Not 128 Byte record size
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; 00 01 02 03 04 05 06 07 ; Logical Sector
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DEFB 17,18,19,20,21,00,00,00 ; Physical sector
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; 08 09 10 11 12 13 14 15 ; Logical Sector
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DEFB 00,00,00,00,00,00,00,00 ; Physical sector
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; 16 17 18 19 20 21 22 23 ; Logical Sector
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DEFB 00,00,00,00,00,00,00,00 ; Physical sector
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; 24 25 ; Logical Sector
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DEFB 00,00 ; Physical sector
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ENDIF
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DPBSIZ EQU $-DPB ; Total size of one DPB
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DPHDSZ EQU DPBRA-DPB ; DPB header size
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;.....
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; DS/DD AMPRO/SB180/ON
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DEFB 'Ampro DSD','D'+80H ; Id - 10 bytes
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DEFB DSK5+DD+TSBTL ; Format type byte 0
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DEFB SPEED5+SEC512+ALC2K ; Format type byte 1
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DEFB -2 ; Skew factor
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DEFB 17 ; Starting sector number
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DEFB 5 ; Physical sectors per track
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DEFB 80 ; Physical tracks/side
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DPBRB: DEFW 40 ; Sectors per track
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DEFB 4 ; Block shift factor
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DEFB 15 ; Block mask
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DEFB 0 ; Extent mask
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DEFW 194 ; Disk size-1
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DEFW 127 ; Directory max
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DEFB 0C0H, 0 ; Alloc 0,1
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DEFW 32 ; Check size
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DEFW 2 ; Track offset
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IF NOT CALCSK
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; NOTE: Sectors are Physical size, Not 128 Byte Record Size
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; 00 01 02 03 04 05 06 07 ; Logical Sector
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DEFB 17,18,19,20,21,22,23,24 ; Physical sector
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; 08 09 10 11 12 13 14 15 ; Logical Sector
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DEFB 25,26,00,00,00,00,00,00 ; Physical sector
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; 16 17 18 19 20 21 22 23 ; Logical Sector
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DEFB 00,00,00,00,00,00,00,00 ; Physical sector
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; 24 25 ; Logical Sector
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DEFB 00,00 ; Physical sector
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ENDIF
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;======================= End of DPBRAM.LIB ===========================
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