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Aminet 15 - Nov 1996.iso
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ace24dist.lha
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ace24.lha
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configregs.h
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1996-09-10
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#ifndef LIBRARIES_CONFIGREGS_H
#define LIBRARIES_CONFIGREGS_H 1
/*
** configregs.h for ACE Basic
**
** Note: Translated to ACE by ConvertC2ACE
** @ MapMeadow Software, Nils Sjoholm
**
**
** Date: 09/01/95
**
**
*/
/*
** This are the StructPointer defines for configregs.h
*/
#ifndef DiagAreaPtr
#define DiagAreaPtr ADDRESS
#endif
#ifndef ExpansionControlPtr
#define ExpansionControlPtr ADDRESS
#endif
#ifndef ExpansionRomPtr
#define ExpansionRomPtr ADDRESS
#endif
/*
** End of StructPointer defines for configregs.h
*/
#ifndef EXEC_TYPES_H
#include <exec/types.h>
#endif /* EXEC_TYPES_H */
/*
** AutoConfig (tm) boards each contain a 32 byte "ExpansionRom" area that is
** read by the system software at configuration time. Configuration of each
** board starts when the ConfigIn* signal is passed from the previous board
** (or from the system for the first board). Each board will present it's
** ExpansionRom structure at location $00E80000 to be read by the system.
** This file defines the appearance of the ExpansionRom area.
**
** Expansion boards are actually organized such that only one nybble per
** 16 bit SHORTINT contains valid information. The low nybbles of each
** SHORTINT are combined to fill the structure below. (This table is structured
** as LOGICAL information. This means that it never corresponds exactly
** with a physical implementation.)
**
** The ExpansionRom space is further split into two regions: The first 16
** bytes are read-only. Except for the er_type field, this area is inverted
** by the system software when read in. The second 16 bytes contain the
** control portion, where all read/write registers are located.
**
** The system builds one "ConfigDev" structure for each board found. The
** list of boards can be examined using the expansion.library/FindConfigDev
** function.
**
** A special "hacker" Manufacturer ID number is reserved for test use:
** 2011 ($7DB). When inverted this will look like $F824.
*/
STRUCT ExpansionRom /* -First 16 bytes of the expansion ROM */
BYTE er_Type /* Board type, size and flags */
BYTE er_Product /* Product number, assigned by manufacturer */
BYTE er_Flags /* Flags */
BYTE er_Reserved03 /* Must be zero ($ff inverted) */
SHORTINT er_Manufacturer /* Unique ID, ASSIGNED BY COMMODORE-AMIGA! */
LONGINT er_SerialNumber /* Available for use by manufacturer */
SHORTINT er_InitDiagVec /* Offset to optional "DiagArea" structure */
BYTE er_Reserved0c
BYTE er_Reserved0d
BYTE er_Reserved0e
BYTE er_Reserved0f
END STRUCT
/*
** Note that use of the ec_BaseAddress register is tricky. The system
** will actually write twice. First the low order nybble is written
** to the ec_BaseAddress register+2 (D15-D12). Then the entire byte is
** written to ec_BaseAddress (D15-D8). This allows writing of a byte-wide
** address to nybble size registers.
*/
STRUCT ExpansionControl /* -Second 16 bytes of the expansion ROM */
BYTE ec_Interrupt /* Optional interrupt control register */
BYTE ec_Z3_HighBase /* Zorro III : Config address bits 24-31 */
BYTE ec_BaseAddress /* Zorro II/III: Config address bits 16-23 */
BYTE ec_Shutup /* The system writes here to shut up a board */
BYTE ec_Reserved14
BYTE ec_Reserved15
BYTE ec_Reserved16
BYTE ec_Reserved17
BYTE ec_Reserved18
BYTE ec_Reserved19
BYTE ec_Reserved1a
BYTE ec_Reserved1b
BYTE ec_Reserved1c
BYTE ec_Reserved1d
BYTE ec_Reserved1e
BYTE ec_Reserved1f
END STRUCT
/*
** many of the constants below consist of a triplet of equivalent
** definitions: xxMASK is a bit mask of those bits that matter.
** xxBIT is the starting bit number of the field. xxSIZE is the
** number of bits that make up the definition. This method is
** used when the field is larger than one bit.
**
** If the field is only one bit wide then the xxB_xx and xxF_xx convention
** is used (xxB_xx is the bit number, and xxF_xx is mask of the bit).
*/
/* manifest constants */
#define E_SLOTSIZE &H10000
#define E_SLOTMASK &Hffff
#define E_SLOTSHIFT 16
/* these define the free regions of Zorro memory space.
** THESE MAY WELL CHANGE FOR FUTURE PRODUCTS!
*/
#define E_EXPANSIONBASE &H00e80000 /* Zorro II config address */
#define EZ3_EXPANSIONBASE &Hff000000 /* Zorro III config address */
#define E_EXPANSIONSIZE &H00080000 /* Zorro II I/O type cards */
#define E_EXPANSIONSLOTS 8
#define E_MEMORYBASE &H00200000 /* Zorro II 8MB space */
#define E_MEMORYSIZE &H00800000
#define E_MEMORYSLOTS 128
#define EZ3_CONFIGAREA &H40000000 /* Zorro III space */
#define EZ3_CONFIGAREAEND &H7FFFFFFF /* Zorro III space */
#define EZ3_SIZEGRANULARITY &H00080000 /* 512K increments */
/**** er_Type definitions (ttldcmmm) ***************************************/
/* er_Type board type bits -- the OS ignores "old style" boards */
#define ERT_TYPEMASK &Hc0 /* Bits 7-6 */
#define ERT_TYPEBIT 6
#define ERT_TYPESIZE 2
#define ERT_NEWBOARD &Hc0
#define ERT_ZORROII ERT_NEWBOARD
#define ERT_ZORROIII &H80
/* other bits defined in er_Type */
#define ERTB_MEMLIST 5 /* Link RAM into free memory list */
#define ERTB_DIAGVALID 4 /* ROM vector is valid */
#define ERTB_CHAINEDCONFIG 3 /* Next config is part of the same card */
#define ERTF_MEMLIST (32)
#define ERTF_DIAGVALID (16)
#define ERTF_CHAINEDCONFIG (8)
/* er_Type field memory size bits */
#define ERT_MEMMASK &H07 /* Bits 2-0 */
#define ERT_MEMBIT 0
#define ERT_MEMSIZE 3
/**** er_Flags byte -- for those things that didn't fit into the type byte ****/
/**** the hardware stores this byte in inverted form ****/
#define ERFF_MEMSPACE (128) /* Wants to be in 8 meg space. */
#define ERFB_MEMSPACE 7 /* (NOT IMPLEMENTED) */
#define ERFF_NOSHUTUP (64) /* Board can't be shut up */
#define ERFB_NOSHUTUP 6
#define ERFF_EXTENDED (32) /* Zorro III: Use extended size table */
#define ERFB_EXTENDED 5 /* for bits 0-2 of er_Type */
/* Zorro II : Must be 0 */
#define ERFF_ZORRO_III (16) /* Zorro III: must be 1 */
#define ERFB_ZORRO_III 4 /* Zorro II : must be 0 */
#define ERT_Z3_SSMASK &H0F /* Bits 3-0. Zorro III Sub-Size. How */
#define ERT_Z3_SSBIT 0 /* much space the card actually uses */
#define ERT_Z3_SSSIZE 4 /* (regardless of config granularity) */
/* Zorro II : must be 0 */
/* ec_Interrupt register (unused) ********************************************/
#define ECIB_INTENA 1
#define ECIB_RESET 3
#define ECIB_INT2PEND 4
#define ECIB_INT6PEND 5
#define ECIB_INT7PEND 6
#define ECIB_INTERRUPTING 7
#define ECIF_INTENA (2)
#define ECIF_RESET (8)
#define ECIF_INT2PEND (16)
#define ECIF_INT6PEND (32)
#define ECIF_INT7PEND (64)
#define ECIF_INTERRUPTING (128)
/***************************************************************************
**
** these are the specifications for the diagnostic area. If the Diagnostic
** Address Valid bit is set in the Board Type byte (the first byte in
** expansion space) then the Diag Init vector contains a valid offset.
**
** The Diag Init vector is actually a SHORTINT offset from the base of the
** board. The resulting address points to the base of the DiagArea
** structure. The structure may be physically implemented either four,
** eight, or sixteen bits wide. The code will be copied out into
** ram first before being called.
**
** The da_Size field, and both code offsets (da_DiagPoint and da_BootPoint)
** are offsets from the diag area AFTER it has been copied into ram, and
** "de-nibbleized" (if needed). (In other words, the size is the size of
** the actual information, not how much address space is required to
** store it.)
**
** All bits are encoded with uninverted logic (e.g. 5 volts on the bus
** is a logic one).
**
** If your board is to make use of the boot facility then it must leave
** its config area available even after it has been configured. Your
** boot vector will be called AFTER your board's final address has been
** set.
**
****************************************************************************/
STRUCT DiagArea
BYTE da_Config /* see below for definitions */
BYTE da_Flags /* see below for definitions */
SHORTINT da_Size /* the size (in bytes) of the total diag area */
SHORTINT da_DiagPoint /* where to start for diagnostics, or zero */
SHORTINT da_BootPoint /* where to start for booting */
SHORTINT da_Name /* offset in diag area where a string */
/* identifier can be found (or zero if no */
/* identifier is present). */
SHORTINT da_Reserved01 /* two words of reserved data. must be zero. */
SHORTINT da_Reserved02
END STRUCT
/* da_Config definitions */
/*
** DAC_BYTEWIDE can be simulated using DAC_NIBBLEWIDE.
*/
#define DAC_BUSWIDTH &HC0 /* two bits for bus width */
#define DAC_NIBBLEWIDE &H00
#define DAC_BYTEWIDE &H40 /* BUG: Will not work under V34 Kickstart! */
#define DAC_WORDWIDE &H80
#define DAC_BOOTTIME &H30 /* two bits for when to boot */
#define DAC_NEVER &H00 /* obvious */
#define DAC_CONFIGTIME &H10 /* call da_BootPoint when first configing */
/* the device */
#define DAC_BINDTIME &H20 /* run when binding drivers to boards */
/*
**
** These are the calling conventions for the diagnostic callback
** (from da_DiagPoint):
**
** A7 -- points to at least 2K of stack
** A6 -- ExecBase
** A5 -- ExpansionBase
** A3 -- your board's ConfigDev structure
** A2 -- Base of diag/init area that was copied
** A0 -- Base of your board
**
** Your board must return a value in D0. If this value is NULL, then
** the diag/init area that was copied in will be returned to the free
** memory pool.
*/
#endif /* LIBRARIES_CONFIGREGS_H */