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174 lines
6.8 KiB
Plaintext
174 lines
6.8 KiB
Plaintext
;
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; File: SCSIMgrInitFlags.a
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;
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; Copyright: © 1989-1992 by Apple Computer, Inc. All rights reserved.
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;
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; Change History (most recent first):
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;
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; <SM3> 11/3/92 SWC Removed GestaltEqu.a and SCSIEqu.a cuz they aren't needed.
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; <9> 5/1/92 JSM Get rid of not forROM conditional, this file is only for ROM
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; builds. This file now has no conditionals.
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; <8> 12/27/91 RB Rolled in Terror changes. Got rid of 'isUniversal' conditionals.
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; <7> 9/16/91 JSM Cleanup header.
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; <6> 6/12/91 LN Changed #include 'HardwareEqu.a' to 'HardwarePrivateEqu.a'
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; <5> 8/3/90 BG Modified -machTable- to reflect the current real values of
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; BoxFlag.
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; <4> 5/16/90 MSH Added Waimea to machine table as well as adding hasPowerControls
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; conditional.
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; <3> 1/3/90 CCH Changed gestalt equate name back to GestaltEqu.a.
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; <1.3> 9/11/89 jwk NEEDED FOR F19 - Support for universal builds
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; <1.2> 7/15/89 jwk NEEDED FOR AURORA - Added code review changes, F19 routines
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; <1.1> 6/30/89 jwk NEEDED FOR AURORA - Fixed bug calling Gestalt in forRom version
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; <1.0> 6/29/89 jwk NEEDED FOR AURORA - Allows System patch builds based on ROM
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; sources
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;
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;---------------------------------------------------------------------------------------
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;
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; This file contains a routines which set up the the hardware feature flags
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; for the box we are running on.
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; These flags are contained in the globals field State3, and are as follows:
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; bit 0 hwCbPwrMgr ; do we have a Power Mgr
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; bit 1 OSSExists ; do we have an OSS ?
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; bit 2 RBVExists ; do we have an RBV ?
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; bit 3 VIA2Exists ; do we have a second VIA ?
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; bit 4 SCSIDMAExists ; do we have a SCSI DMA chip ?
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; bit 5 onMacPlus ; are we on a Mac Plus ?
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; bit 6 on68000 ; are we on a 68000 ?
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; bit 7 DUF ; is _DeferUserFn defined ? <8> rb
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; bit 8 SCSI96_1 ; do we have one SCSI96 chip <8> rb
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; bit 9 SCSI96_2 ; do we have 2nd SCSI96 chip <8> rb
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; bit 10-31 not used yet <8> rb
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;
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; The algorithm to determine the value of these flags is as follows:
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;
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; 1) First we determine if we are on a machine running with a universal ROM.
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; We call Gestalt for the machine type, and if the type value is greater than
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; that for an Esprit, we assume we have universal ROM support.
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;
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; 2) If we are on a universal ROM, we use the universal ROM macro 'TestFor'
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; to determine the existence of these hardware features, and set our global
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; bits accordingly. This ensures that for future machines, with possibly new
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; combinations of existing features, we can still see what we have, and are
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; not tied to knowing only about current combinations.
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; NOTE THAT IF THE TESTFOR IMPLEMENTATION IS CHANGED WE ARE HOSED!!!!!!!!
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;
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; 3) If we are NOT on a universal machine (which means we must be running on
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; an old CPU), we determine the type of machine we are running on by calling
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; Gestalt, and set our globals flags according to what we KNOW them to be. This
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; is ok because we don't expect these boxes to change anyway.
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;
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;
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; Input: nothing special
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; Output: d0.l contains HW config flags in 3 low bytes
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; d0.l contains gestalt box number in high byte
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; d0 contains -1 if we don't have a clue
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; destroys: d0
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;
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blanks on
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string asis
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print off
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LOAD 'StandardEqu.d'
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include 'HardwarePrivateEqu.a'
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include 'UniversalEqu.a'
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print on
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;
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; NOTE that these are also defined in SCSIMgrInit.a, so if you change 'em here....
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;
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sHWCbPwrMgr equ 0 ; see if we have a Power Mgr <eee>
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sOSSExists equ 1 ; do we have an OSS ?
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sRBVExists equ 2 ; do we have an RBV ?
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sVIA2Exists equ 3 ; do we have a second VIA ?
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sSCSIDMAExists equ 4 ; do we have a SCSI DMA chip ?
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isMacPlus equ 5 ; are we on a Mac Plus ?
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is68000 equ 6 ; are we on a 68000?
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sDeferUserFn equ 7 ; is _DeferUserFn defined ?
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sSCSI96_1 equ 8 ; do we have 1st SCSI96 chip <8> rb
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sSCSI96_2 equ 9 ; do we have 2nd SCSI96 chip? <8> rb
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SCSISetFlags proc export
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movem.l a0/d1,-(sp) ; save out a register
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moveq.l #0,d0 ; set all flags to zero to start
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; Plus, xx bits remains zero
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; for ROM, we start here.
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@NewMach ; removed call to Gestalt
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TestFor VIA2Exists ; via2 chip?
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beq.s @noVIA2 ; no
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bset.l #sVIA2Exists,d0 ; we have a VIA2
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@noVIA2
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TestFor RBVExists ; RBV chip?
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beq.s @noRBV ; no
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bset.l #sRBVExists,d0 ; we have an RBV
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@noRBV
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TestFor SCSIDMAExists ; SCSI DMA chip
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beq.s @noDMA ; no
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bset.l #sSCSIDMAExists,d0 ; we have SCSI DMA
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@noDMA
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TestFor OSSExists ; OSS chip?
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beq.s @noOSS ; no
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bset.l #sOSSExists,d0 ; we have an OSS
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@noOSS
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TestFor hwCbPwrMgr ; Power Manager?
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beq.s @noPMgr ; no
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bset.l #sHWCbPwrMgr,d0 ; we have a Power Mgr
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@noPMgr
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TestFor SCSI96_1Exists ; check if we have a SCSI96_1 <8> rb
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beq.s @noSCSI96 ; no SCSI96 at all <8> rb
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bset.l #sSCSI96_1, d0 ; we have SCSI96_1 <8> rb
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@noSCSI96
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TestFor SCSI96_2Exists ; check if we have SCSI96_2 <8> rb
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beq.s @chkCPU ; bra. if not <8> rb <t4> djw
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bset.l #sSCSI96_2, d0 ; we have SCSI96_2 <8> rb
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@chkCPU tst.b cpuFlag ; are we on a 68000?
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bne.s @done ; no
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bset.l #is68000,d0 ; yes, so set corresponding bit
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@done
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movem.l (sp)+,a0/d1 ; restore register
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rts
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; This table is based on the gestalt numbering scheme; it better not change!!!
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; note this table must be extended for new machines
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machTable ;DUF 000 Plus DMA Via2 RBV OSS PwrM
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dc.b $60 ; 0 1 1 0 0 0 0 0 MacPlus EQU 4
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dc.b $40 ; 0 1 0 0 0 0 0 0 MacSE EQU 5
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dc.b $08 ; 0 0 0 0 1 0 0 0 MacII EQU 6
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dc.b $08 ; 0 0 0 0 1 0 0 0 MacIIx EQU 7
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dc.b $08 ; 0 0 0 0 1 0 0 0 MacIIcx EQU 8
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dc.b $08 ; 0 0 0 0 1 0 0 0 MacSE30 EQU 9
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dc.b $41 ; 0 1 0 0 0 0 0 1 Portable EQU 10
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dc.b $04 ; 0 0 0 0 0 1 0 0 MacIIci EQU 11
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dc.b $18 ; 0 0 0 1 1 0 0 0 4Square EQU 12
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dc.b $12 ; 0 0 0 1 0 0 1 0 MacIIfx EQU 13
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dc.b $00 ; AuroraCX16 (unused) EQU 14
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dc.b $00 ; AuroraSE25 (unused) EQU 15
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dc.b $00 ; AuroraSE16 (unused) EQU 16
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dc.b $40 ; 0 1 0 0 0 0 0 0 MacClassic EQU 17
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dc.b $00 ; 0 0 0 0 0 0 0 0 MacIIsi EQU 18
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dc.b $00 ; 0 0 0 0 0 0 0 0 MacLC EQU 19
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dc.b $81 ; 0 0 0 1 1 0 0 0 Eclipse EQU 20
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dc.b $09 ; 0 0 0 0 1 0 0 1 Waimea EQU 21
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dc.b $00 ; 0 0 0 0 0 0 0 0 ElsieV8 EQU 22
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endproc
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END.
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