193 lines
5.8 KiB
OpenEdge ABL
193 lines
5.8 KiB
OpenEdge ABL
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IFND LIBRARIES_CONFIGREGS_I
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LIBRARIES_CONFIGREGS_I SET 1
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**
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** $Filename: libraries/configregs.i $
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** $Release: 1.3 $
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**
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** register and bit definitions for expansion boards
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**
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** (C) Copyright 1986,1987,1988 Commodore-Amiga, Inc.
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** All Rights Reserved
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**
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** Expansion boards are actually organized such that only one nibble per
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** word (16 bits) are valid information. This table is structured
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** as LOGICAL information. This means that it never corresponds
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** exactly with a physical implementation.
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**
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** The expansion space is logically split into two regions:
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** a rom portion and a control portion. The rom portion is
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** actually stored in one's complement form (except for the
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** er_type field).
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STRUCTURE ExpansionRom,0
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UBYTE er_Type
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UBYTE er_Product
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UBYTE er_Flags
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UBYTE er_Reserved03
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UWORD er_Manufacturer
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ULONG er_SerialNumber
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UWORD er_InitDiagVec
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UBYTE er_Reserved0c
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UBYTE er_Reserved0d
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UBYTE er_Reserved0e
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UBYTE er_Reserved0f
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LABEL ExpansionRom_SIZEOF
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STRUCTURE ExpansionControl,0
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UBYTE ec_Interrupt ; interrupt control register
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UBYTE ec_Reserved11
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UBYTE ec_BaseAddress ; set new config address
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UBYTE ec_Shutup ; don't respond, pass config out
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UBYTE ec_Reserved14
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UBYTE ec_Reserved15
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UBYTE ec_Reserved16
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UBYTE ec_Reserved17
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UBYTE ec_Reserved18
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UBYTE ec_Reserved19
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UBYTE ec_Reserved1a
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UBYTE ec_Reserved1b
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UBYTE ec_Reserved1c
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UBYTE ec_Reserved1d
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UBYTE ec_Reserved1e
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UBYTE ec_Reserved1f
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LABEL ExpansionControl_SIZEOF
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**
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** many of the constants below consist of a triplet of equivalent
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** definitions: xxMASK is a bit mask of those bits that matter.
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** xxBIT is the starting bit number of the field. xxSIZE is the
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** number of bits that make up the definition. This method is
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** used when the field is larger than one bit.
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**
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** If the field is only one bit wide then the xxB_xx and xxF_xx convention
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** is used (xxB_xx is the bit number, and xxF_xx is mask of the bit).
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**
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** manifest constants */
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E_SLOTSIZE EQU $10000
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E_SLOTMASK EQU $ffff
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E_SLOTSHIFT EQU 16
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** these define the two free regions of Zorro memory space.
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** THESE MAY WELL CHANGE FOR FUTURE PRODUCTS!
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E_EXPANSIONBASE EQU $e80000
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E_EXPANSIONSIZE EQU $080000
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E_EXPANSIONSLOTS EQU 8
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E_MEMORYBASE EQU $200000
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E_MEMORYSIZE EQU $800000
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E_MEMORYSLOTS EQU 128
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******* ec_Type definitions */
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** board type -- ignore "old style" boards */
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ERT_TYPEMASK EQU $c0
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ERT_TYPEBIT EQU 6
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ERT_TYPESIZE EQU 2
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ERT_NEWBOARD EQU $c0
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** type field memory size */
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ERT_MEMMASK EQU $07
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ERT_MEMBIT EQU 0
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ERT_MEMSIZE EQU 3
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** other bits defined in type field */
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BITDEF ERT,CHAINEDCONFIG,3
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BITDEF ERT,DIAGVALID,4
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BITDEF ERT,MEMLIST,5
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** er_Flags byte -- for those things that didn't fit into the type byte */
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BITDEF ERF,MEMSPACE,7 ; wants to be in 8 meg space. Also
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; implies that board is moveable
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BITDEF ERF,NOSHUTUP,6 ; board can't be shut up. Must not
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; be a board. Must be a box that
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; does not pass on the bus.
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** interrupt control register */
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BITDEF ECI,INTENA,1
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BITDEF ECI,RESET,3
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BITDEF ECI,INT2PEND,4
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BITDEF ECI,INT6PEND,5
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BITDEF ECI,INT7PEND,6
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BITDEF ECI,INTERRUPTING,7
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**************************************************************************
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**
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** these are the specifications for the diagnostic area. If the Diagnostic
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** Address Valid bit is set in the Board Type byte (the first byte in
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** expansion space) then the Diag Init vector contains a valid offset.
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**
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** The Diag Init vector is actually a word offset from the base of the
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** board. The resulting address points to the base of the DiagArea
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** structure. The structure may be physically implemented either four,
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** eight, or sixteen bits wide. The code will be copied out into
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** ram first before being called.
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**
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** The da_Size field, and both code offsets (da_DiagPoint and da_BootPoint)
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** are offsets from the diag area AFTER it has been copied into ram, and
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** "de-nibbleized" (if needed). Inotherwords, the size is the size of
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** the actual information, not how much address space is required to
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** store it.
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**
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** All bits are encoded with uninverted logic (e.g. 5 volts on the bus
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** is a logic one).
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**
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** If your board is to make use of the boot facility then it must leave
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** its config area available even after it has been configured. Your
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** boot vector will be called AFTER your board's final address has been
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** set.
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**
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**************************************************************************
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STRUCTURE DiagArea,0
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UBYTE da_Config ; see below for definitions
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UBYTE da_Flags ; see below for definitions
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UWORD da_Size ; the size (in bytes) of the total diag area
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UWORD da_DiagPoint ; where to start for diagnostics, or zero
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UWORD da_BootPoint ; where to start for booting
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UWORD da_Name ; offset in diag area where a string
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; identifier can be found (or zero if no
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; identifier is present).
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UWORD da_Reserved01 ; two words of reserved data. must be zero.
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UWORD da_Reserved02
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LABEL DiagArea_SIZEOF
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; da_Config definitions
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DAC_BUSWIDTH EQU $C0 ; two bits for bus width
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DAC_NIBBLEWIDE EQU $00
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DAC_BYTEWIDE EQU $40
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DAC_WORDWIDE EQU $80
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DAC_BOOTTIME EQU $30 ; two bits for when to boot
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DAC_NEVER EQU $00 ; obvious
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DAC_CONFIGTIME EQU $10 ; call da_BootPoint when first configing the
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; the device
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DAC_BINDTIME EQU $20 ; run when binding drivers to boards
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**
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** These are the calling conventions for Diag or Boot area
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**
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** A7 -- points to at least 2K of stack
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** A6 -- ExecBase
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** A5 -- ExpansionBase
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** A3 -- your board's ConfigDev structure
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** A2 -- Base of diag/init area that was copied
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** A0 -- Base of your board
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**
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** Your board should return a value in D0. If this value is NULL, then
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** the diag/init area that was copied in will be returned to the free
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** memory pool.
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**
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ENDC ; LIBRARIES_CONFIGREGS_I
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