Macintosh-SW/mac-rom
1
0
Fork 0
mirror of https://github.com/elliotnunn/mac-rom.git synced 2024-12-28 01:29:20 +00:00
Code Issues Projects Releases Wiki Activity
4868d3b176
mac-rom/Patches/VideoPatch.a

1228 lines
51 KiB
Plaintext
Raw Normal View History

Bring in CubeE sources Resource forks are included only for .rsrc files. These are DeRezzed into their data fork. 'ckid' resources, from the Projector VCS, are not included. The Tools directory, containing mostly junk, is also excluded.
2017-09-17 09:09:04 +00:00
;
; File: VideoPatch.a
;
; Contains: Patches to fix problems in various Apple Video Drivers.
;
; Written by: George Norman, Dave Fung, Mike Puckett.
;
; Copyright: <09> 1987-1992 by Apple Computer, Inc., all rights reserved.
;
; Change History (most recent first):
;
; <SM2> 5/16/92 kc Include ROMEqu instead of ROMPrivateEqu.
; <9> 1/8/92 RB Removed definition of drHwJMFB, since it is now in ROMEqu.a
; <8> 12/31/91 RB Removed definition of DAFB_PgMdEn, it is now in
; HardwarePrivateEqu.a
; <7> 12/2/91 SAM Using official boxflag equates now.
; <6> 10/28/91 SAM/KSM Rolled in Regatta file.
;
; Regatta change history:
;
; <10> 10/2/91 SAM (jmp) Fixed a problem when looking at gDevices that don<6F>t
; actually contain associated video drivers.
; <9> 8/25/91 SAM (jmp) Put the DAFB/JMFB WITH statements around the DAFB/JMFB
; code. The reason I had to do this is because the DAFB equates
; have similar names as the TFB equates and this was causing
; incorrect code to be generated in the TFB part of this patch.
; <8> 8/21/91 SAM (jmp) Code Review Changes: 1) Removed the unnecessary saves &
; restores of register D0 after & before calling SwapMMUMode,
; respectively, and 2) changed the slot searching from 9 to 0 in
; both the TFB & JMFB fixes for slot expansion boxes.
; <7> 8/19/91 SAM (jmp) Added support for the Bungee (1.1) version of the 4<>8/
; 8<>24 Card ROM for TERROR ROM CPUs.
; <6> 8/15/91 SAM (jmp) Fixed a problem with the DAFB sRsrc patches where I was
; not updating the driver privates correctly.
; <5> 8/8/91 SAM (jmp) Added two <20>patches<65> for DAFB built-in video. The first one
; just enables PageMode, while the second fixes a problem with NTSC
; and PAL sRsrcs when going from 2 Megs of VRam to 1 Meg of VRam
; across reboots.
; <4> 7/30/91 SAM Removed redefinition of drHwDAFB.
; <3> 7/29/91 SAM (jmp) Added code to check for Zydeco ROM and to skip the boxflag
; check for Spike & Eclipse that corrects a 16bpp capable sRsrc on
; those machines.
; <2> 7/18/91 SAM (jmp) Video SResoure stuff.
; <1> 7/18/91 SAM Split off from 7.0 GM sources.
;
; 7.0 Change History:
;
; <5> 11/8/90 jmp Removed a debugger statement I accidently left in.
; <4> 11/6/90 jmp Renamed DepVideoEqu.a to TFBDepVideoEqu.a; had to change INCLUDE
; name.
; <3> 11/2/90 jmp For 6.0.X and 7.0 builds: Fixed version comparison problem (word
; instead of byte alignment), and updated version number from
; DepVideoEqu.a.
; <2> 7/11/90 gbm add align, so assembler is happy
; <1.6> 11/28/89 DAF FOR 6.0.5 and 7.0 BUILDS - Somehow, the 1.5 version change
; didn't stick, so I once again updated the CurrentVersion equate
; to version 4 to match the latest version of the driver in this
; build
; <1.5> 11/27/89 DAF FOR 6.0.5 AND 7.0 BUILDS - Updated file to latest TFBDrvr
; version number.
; <1.5> 11/27/89 DAF Updated the version.
; <1.4> 8/14/89 DAF FOR 6.0.4 BUILD - Fixed a register clearing problem. Also made
; the label names local to avoid conflicts in the patch files.
; <1.3> 8/6/89 DAF FOR 6.0.4 BUILD - This version of VidInit (included in
; PatchIIROM.a and PatchIIciROM.a) properly deallocates the slot
; interrupt queue element when it does it's voodoo on the startup
; TFB driver.
; <1.2> 5/3/89 GGD TFBDrvr v3 fixes an inverted gamma table problem. This fix
; corrects the problem if the TFB is the boot device. (DAF under
; the initials of GGD)
; <1.1> 5/2/89 DAF Changed video driver version to 3 for the new TFB release
; <1.0> 11/16/88 CCH Added to EASE.
; <S376> 1/31/88 DAF Updated driver version number for test
; <S237> 9/15/87 DAF Cleared the high half of a register to guarantee unit table code
; works OK under adverse conditions
;
; To Do:
;
;------------------------------------------------------------------------
;
; Copyright Apple Computer, Inc. 1987
; All Rights Reserved
;
;------------------------------------------------------------------------
;
; File : VideoPatch.a
;
; Author : George Norman, February 16, 1987
; Converted into system patch and integrated into system disk build : David Fung, 19 Aug 1987
;
; This code scans the graphics DeviceList, testing all open video drivers
; against a video driver in the system file. If the disk version is
; newer, then the slot driver is closed and the system driver is opened
; in its place. This patch works in conjunction with changes to the
; Open routine for slot drivers so that only the boot device will
; be operated on by the code. This mechanism allows Apple to place
; newer versions of the driver in the system file without nasty side
; effects. Third party vendors should perform this override from an
; INIT 31 file.
;
; <Since 1.3 this Bug note is purely historical. See comment below>
; Bug note: The ROM version of the TFBDrvr has a bug in the Close routine, where it
; neglects to set the slot number in D0 when calling _SIntRemove. This leaves a
; pointer to a disposed block in the slot interrupt queue element when the code
; in this file is executed on the boot video device. When the RAM driver is re-opened
; a new, correct queue element is built and installed ahead of the disposed one.
; The dead element will not cause any problems, but should be corrected in future
; video ROMs. The override driver is corrected and all future close calls should work
; OK. This problem could be fixed here, but it involves brutally clobbering the
; dead queue element, since the ROM close must be executed, and the pointer block
; is disposed within the call. Since the bug is fairly benevolent, we'll let it
; go.
;
; 1.3 Bug Update : Turns out that the _SIntRemove bug is NOT a big deal to fix. In
; addition, it seemed that it could possibly cause problems if the SetInterrupt
; routine was used (it can cause multiple queue elements that point to the same
; handler), so I corrected the problem here.
;
;------------------------------------------------------------------------
INCLUDE 'TFBDepVideoEqu.a' ; To get current TFB Driver version.
Include 'InternalOnlyEqu.a' ; To get boxFlags for Spike & Eclipse.
Include 'VideoEqu.a' ; Various video-related equates.
Include 'ROMEqu.a' ; Various DAFB equates.
;-------------------------------------------------------------------
; Local Vars, definitions, etc....
;-------------------------------------------------------------------
; This is device storage which is stored in the dCtlStorage field of the DCE (for TFB).
DCEPtr EQU 0 ; pointer to our DCE
saveMode EQU DCEPtr+4 ; the current mode setting
savePage EQU saveMode+2 ; the current page setting
saveBaseAddr EQU savePage+2 ; the current base address
saveSQElPtr EQU saveBaseAddr+4 ; the SQ element pointer (for _SIntRemove). <C497>
GammaPtr EQU saveSQElPtr+4 ; the pointer to the Gamma correction table <C522> DAF
GFlags EQU GammaPtr+4 ; flags word
VRAM256K EQU GFlags+2 ; boolean - TRUE if 256K vidRAM, FALSE if 512K <C804> DAF
dCtlSize EQU VRAM256K+2 ; size of dCtlStorage <C497>
; These equates have been extracted directly from the TERROR ROM project (for DAFB).
DAFBVidPrivates RECORD 0 ; Similar to the TFB privates above, but for DAFB.
saveBaseAddr DS.L 1 ; the screen base address (NOT ST corrected!)
saveScreenBase DS.L 1 ; ST corrected version of saveBaseAddr.
saveSQElPtr DS.L 1 ; the SQ element pointer (for _SIntRemove)
saveGammaPtr DS.L 1 ; the pointer to the Gamma correction table
saveGamDispPtr DS.L 1 ; the pointer to the Gamma block
saveVDACBase DS.L 1 ; the base addr of the VDAC
saveDAFBBase DS.L 1 ; the base addr of the DAFB
saveVidPtr DS.L 1 ; pointer to a big block of DAFB video parameters
GFlags DS.W 1 ; flags word
has16bppACDC Ds.b 1 ; true if AC842A is around
pageModeSet Ds.b 1 ; true if the pRam PageMode enable bit is set
saveMode DS.W 1 ; the current mode setting
saveMonID DS.W 1 ; monitor type ID
saveSlotId DS.W 1 ; spID of video sRsrc (hi-order byte only!)
DAFBVidPrivSize EQU *
ENDR
sRsrc_Vid_DAFB_NTSCSTa EQU $D0 ; NTSC ST 1,2,4,8
sRsrc_Vid_DAFB_NTSCSTb EQU $D1 ; NTSC ST 1,2,4,8,32
sRsrc_Vid_DAFB_NTSCFFa EQU $D2 ; NTSC FF 1,2,4,8
sRsrc_Vid_DAFB_NTSCFFb EQU $D3 ; NTSC FF 1,2,4,8,32
sRsrc_Vid_DAFB_PALSTa EQU $D4 ; PAL ST 1,2,4,8
sRsrc_Vid_DAFB_PALSTb EQU $D5 ; PAL ST 1,2,4,8,32
sRsrc_Vid_DAFB_PALFFa EQU $D6 ; PAL FF 1,2,4,8
sRsrc_Vid_DAFB_PALFFb EQU $D7 ; PAL FF 1,2,4,8,32
sRsrc_Vid_DAFB_RGBFPb EQU $CD ; RGBPort 8bpp
sRsrc_Vid_DAFB_RGB2Pb EQU $CF ; Vesuvio 8bpp
sRsrc_Vid_DAFB_RGBFPbx Equ $ED ; RGBPort 16bpp
sRsrc_Vid_DAFB_RGB2Pbx Equ $EF ; Vesuvio 16bpp
kMegRAM EQU $100000 ; constant for 1Mb
k1536KvRAM Equ $180000 ; constant for 1.5Mb
k256KvRAM EQU (256*1024) ; constant for 256Kb
k512KvRAM EQU (512*1024) ; constant for 512Kb
k1MvRAM EQU (1024*1024) ; constant for 1MB
k2MvRAM EQU 2*k1MvRAM ; constant for 2MB
DAFBStdOffset EQU $1000 ; Active video offset from base of frame buffer vRAM for most displays.
DAFBBSOffset EQU $0E00 ; Active video offset for Big Screens: 2P, LP, & SVGA.
DAFBNTSCOffset Equ $1020 ; Active video offset for NTSC Displays.
DAFBPALOffset Equ $0E20 ; Active video offset for PAL Displays.
DAFBBase Equ $800000 ; Offset from $Fs000000 address for DAFB registers.
; <8> rb DAFB_PgMdEn Equ $18 ; DAFB page mode enable register.
; DAFB houses it's mode parameters in a table in the functional sRsrc list. Here's
; the ID for it. It's in the reserved range, but it's highly likely that this
; will be forever OK - I'll bet on it.
sVidParmDir EQU 126 ;
; Slot pRAM
;
; Slot pRam is used in various ways. The first two bytes are used by the Slot Manager to record
; the slot<6F>s boardID. The remaining bytes are left undefined by the Slot Manager. Built-in
; video uses Slot pRam as follows:
;
SP_Params Record 0
SP_BoardID Ds.w 1 ; BoardID.
SP_Depth Ds.b 1 ; spID of Depth (Mode). (vendorUse1)
SP_LastConfig Ds.b 1 ; spID of last boot-up configuration. (vendorUse2)
SP_DfltConfig Ds.b 1 ; spID of default configuration. (vendorUse3)
SP_MonID Ds.b 1 ; Sense code of last display. (vendorUse4)
SP_Flags Ds.b 1 ; Various flags. (vendorUse5)
SP_NoConnect Ds.b 1 ; Sense ID of monitor to use on no-connect (vendorUse6)
SP_Size Equ *
EndR
; Slot pRAM flag bits
;
spPageMode Equ 3 ; True if we<77>re enabling DAFB<46>s PageMode.
; Various extra Control/Status calls used by built-in video
;
cscPageMode Equ 130 ; Used by DAFBDriver for enabling/disabling page mode.
; These are all non-pruned and/or unsupported IDs of the sRsrcs left over from the TERROR ROM JMFB patch.
;
sRsrc_Vid12A Equ $8C ; Video sResource ID for NTSC, standard memory
sRsrc_Vid12B Equ $AC ; Video sResource ID for NTSC, expanded memory
sRsrc_Vid12C Equ $9C ; 24 bit sResource duplicate of sRsrc_Vid12A
sRsrc_Vid12D Equ $BC ; 24 bit sResource duplicate of sRsrc_Vid12B
sRsrc_Vid14A Equ $88 ; Video sResource ID for PAL, standard memory
sRsrc_Vid14B Equ $A8 ; Video sResource ID for PAL, expanded memory
sRsrc_Vid14C Equ $98 ; 24 bit sResource duplicate of sRsrc_Vid14A
sRsrc_Vid14D Equ $B8 ; 24 bit sResource duplicate of sRsrc_Vid14B
sRsrc_Vid14Au Equ $80 ; Video sResource ID for PAL underscan, standard memory
sRsrc_Vid14Bu Equ $A0 ; Video sResource ID for PAL underscan, expanded memory
sRsrc_Vid14Cu Equ $90 ; 24 bit sResource duplicate of sRsrc_Vid14A
sRsrc_Vid14Du Equ $B0 ; 24 bit sResource duplicate of sRsrc_Vid14B
TERRORBungeeVers Equ $0110 ; TERROR ROM version of the Bungee video driver.
;************************************************************************
;
; Video driver override init.
; Registers used:
; A6 - Stack frame pointer.
; A4 - ioCore parameter block pointer.
; A3 - SDM parameter block pointer.
; A2 - Control/Status parameter block pointer.
; A1 - Misc.
; A0 - Misc.
;
; D7 - Saved ptr to GDev (TFB)/Framebuffer offset value (DAFB)
; D6 - Saved ptr to the original DCE (TFB)/Re-inserted sRsrc ID (DAFB)
; D5 - Saved pointer to the original video driver entry (TFB)/Misc (DAFB)
; D4 - Saved handle to the original video driver (TFB)/Misc (DAFB)
;
;************************************************************************
; Define stack-frame
;
StackFrame RECORD {A6Link},DECR
Return DS.L 1 ;Return address
A6Link DS.L 1 ;Old A6
sMode DS.W 1 ;Saved mode.
sPage DS.W 1 ;Saved page.
sBaseAddr DS.L 1 ;Saved base address.
sGammaPtr DS.L 1 ;Saved gamma table pointer.
sGFlags DS.W 1 ;Saved gamma flags.
sSQEl DS.L 1 ;Saved slot interrupt handler queue element ptr <1.3>
minorVers Ds.b 1 ;Flag for remebering which ROM we<77>re fixing.
downSizeSRsrc Ds.b 1 ;True if downSizing instead of upSizing.
hasFamilies Ds.b 1 ;True if SP_LastConfig should be reset (config has family members).
Ds.b 1 ;Padding.
bootRefNum Ds.w 1 ;RefNum of boot screen<65>s video driver (for JMFB).
bootDrvrHndl Ds.l 1 ;Handle to the boot screen<65>s video driver (for JMFB).
saveA5 Ds.l 1 ;For a local QuickDraw world.
localA5 Ds.l 1
thePort Ds.l 1
Ds.b GrafSize-4
aRect Ds.w 4
aPort Ds.b PortRec
LocalSize EQU * ;Size of local vars.
ENDR
Bra BeginVideoPatch
;----------------------------------------------------------------------
; Data
;----------------------------------------------------------------------
STRING PASCAL
TFBVideoTitle DC.B '.Display_Video_Apple_TFB' ;Name of TFB driver.
ALIGN 2
JMFBVideoTitle Dc.b '.Display_Video_Apple_MDC' ;Name of JMFB driver.
Align 2
JMFBSRsrcTable
Dc.w JMFBTabEnd-JMFBTabStart-1 ;Block size.
JMFBTabStart
Dc.b sRsrc_Vid14A,sRsrc_Vid14B ; All the PAL under/overscan sRsrcs.
Dc.b sRsrc_Vid14C,sRsrc_Vid14D
Dc.b sRsrc_Vid14Au,sRsrc_Vid14Bu
Dc.b sRsrc_Vid14Cu,sRsrc_Vid14Du
Dc.b sRsrc_Vid12A,sRsrc_Vid12B ; All the NTSC overscan sRsrcs.
Dc.b sRsrc_Vid12C,sRsrc_Vid12D
JMFBTabEnd
;----------------------------------------------------------------------
; Utilities
;----------------------------------------------------------------------
SwitchDepths
;---------------------------------------------------------------------
;
; SwitchDepths -- switches the bit depth of the specified boot-up
; screen to the specified depth, rounds the corners, and draws
; the arrow. Note that this utiltiy should only be called within
; the confines of the VideoPatch StackFrame.
;
; Input: D0.w = Video Driver RefNum,
; D1.l = VidMode.
;
; Trashes: A0/A1.
;---------------------------------------------------------------------
;
With StackFrame
; Set up to switch depths<68>
Move.l A2,-(Sp) ; Save a work register.
Move.w D0,-(Sp) ; Push the driver refNum.
Move.l D1,-(Sp) ; Push the mode to change to.
Move.l DeviceList,-(Sp) ; Push the GDHandle.
_HideCursor ; Hide the cursor (to prevent visual artifacts).
Move.b #1,CrsrBusy ; Say its busy for now.
_InitGDevice ; Switch depths.
; Gray screen with rounded corners using Horst<73>s patented methods<64>
Move.l A5,saveA5(A6) ; Save the current A5.
Lea localA5(A6),A5 ; Point to our A5.
Move.l A5,CurrentA5 ; Update CurrentA5 for QD.
Pea thePort(A6) ; Push thePort.
_InitGraf ; Init our QD world.
Pea aPort(A6) ; Push aPort.
_OpenPort ; Open it.
Move.l (A5),A2 ; Point to QD globals.
Lea ScreenBits+Bounds(A2),A0 ; Point to screen rectangle.
Move.l A0,-(Sp) ; Push for FrameRoundRect.
Lea aRect(A6),A1 ; Point to aRect.
Move.l A1,-(Sp) ; Push for FrameRoundRect.
Move.l A1,-(Sp) ; Push for InsetRect.
Move.l (A0)+,(A1)+ ; aRect <- ScreenRect.
Move.l (A0),(A1) ;
Move.l #$FFFDFFFD,-(Sp) ; Make aRect bigger by 3 on each side.
_InsetRect
Move.l #$00030003,-(Sp) ; Make pen 3 pixels wide.
_PenSize
Move.l #$00160016,-(Sp) ; Rounding factor ($00100010 + 2 * $00030003).
_FrameRoundRect ; Draw black corners.
_PenNormal ; Restore the pen.
Move.l #$00100010, -(SP) ; Push the rounding factor.
Pea Gray(A2) ; Push gray.
_FillRoundRect ; Fill a round rectangle gray.
; Clean up<75>
Pea aPort(A6) ; Push aPort.
_ClosePort ; Close it.
Move.l saveA5(A6),A5 ; Restore A5.
Move.l A5,CurrentA5 ; Restore CurrentA5.
Clr.b CrsrBusy ; Un-busy the cursor.
_AllocCursor ; Update all its structs.
_InitCursor ; Reshow it as an arrow (balances the hide above).
Move.l (Sp)+,A2 ; Restore work register.
Rts
EndWith
;----------------------------------------------------------------------
; Main
;----------------------------------------------------------------------
BeginVideoPatch
WITH StackFrame,spBlock
; Allocate local vars<72>
;
LINK A6,#LocalSize
MOVEM.L A2-A4/D4-D7,-(SP) ;Save registers.
SUB.W #IOQElSize,SP ;Allocate ioCore pBlock.
MOVE.L SP,A4 ;Save pointer.
SUB.W #spBlockSize,SP ;Allocate SDM pBlock.
MOVE.L SP,A3 ;Save pointer.
SUB.W #12,SP ;Allocte CS parameter block.
MOVE.L SP,A2 ;Save pointer.
TST.L DeviceList ;Test DeviceList for nil.
BEQ AllDone ;Done if empty list.
Move.l DeviceList,A0 ; Get the DeviceList Handle. <10>
Move.l (A0),A0 ; Make it a pointer. <10>
Move.w gdRefNum(A0),D0 ; If there<72>s no driver, then <10>
Beq AllDone ; we can<61>t do anything here. <10>
; If this is a TERROR ROM machine, the TFB Driver has already been patched out
; because of a byte-lane smearing problem on <20>040 CPUs. So, we can just
; skip the TFB patch. But, we need to fix a couple of problems on Spike &
; Eclipse CPUs that involve 16/32bpp-capable sRsrcs being enabled when they
; shouldn<64>t be and vice-versa.
;
; Also, for Spike, Eclipse, and Zydeco, we<77>re enabling DAFB PageMode. For
; TERROR ROM machines, this means we have to do all the work ourselves.
; The Zydeco ROM takes care of everything if either the pRAM bit is set
; (at VidOpen if we aren<65>t the startup screen) or if we make the
; driver call. (NOTE: The TERROM ROM DAFB driver does NOT intelligently
; handle the PageMode register, while the Zydeco ROM DAFB driver does.
; This basically means that with TERROR ROM CPUs, DAFB PageMode will
; ALWAYS be on, and for Zydeco ROM CPUs, PageMode will only be on
; when it<69>s applicable. At some point, it might be reasonable to
; patch the Zydeco ROM DAFB driver into TERROR ROM CPUs.)
;
With SP_Params,VDPageInfo,DAFBVidPrivates
TERROR_MajVer Equ $067C ; ROM Major version for TERROR.
TERROR_MinVer Equ $15 ; ROM Minor version for TERROR.
Zydeco_MinVer Equ $17 ; ROM Minor version for Zydeco.
ROMMajVer Equ $08 ; Offset from ROMBase to ROM Major version word.
ROMMinVer Equ $12 ; Offset from ROMBase to RAM Major version word.
Move.l RomBase,A0 ; Get RomBase into A0.
Move.w ROMMajVer(A0),D0 ; Get the major version.
Cmp.w #TERROR_MajVer,D0 ; If this is NOT a IIci-class ROM,
Bne StartTFB ; then just do the TFB stuff.
Move.b ROMMinVer(A0),D0 ; Otherwise, get the minor version.
Move.b D0,minorVers(A6) ; Save it for later.
Cmp.b #TERROR_MinVer,D0 ; If this is a TERROR ROM,
Beq.s @FixJMFB ; then do the JMFB fixes, followed by the DAFB fixes.
Cmp.b #Zydeco_MinVer,D0 ; If this is a Zydeco ROM,
Beq @ChkBoxFlag ; then just check the boxFlag for the DAFB fixes.
Bra StartTFB ; Otherwise, do the TFB stuff (just for safety).
@FixJMFB
Bsr StartJMFB ; Go do the JMFB fixes.
@ChkBoxFlag
Move.b BoxFlag,D0 ; Get the BoxFlag.
Cmp.b #boxQuadra700,D0 ; If this is a Spike, <7>
Beq.s StartDAFB ; then start doing DAFB stuff.
Cmp.b #boxQuadra900,D0 ; If this is an Eclipse, <7>
Beq.s StartDAFB ; then start doing DAFB stuff.
Cmp.b #boxZydeco,D0 ; If this is a Zydeco (Eclipse 33),
Beq.s StartDAFB ; then start doing DAFB stuff.
Bra AllDone ; Otherwise, just go home.
StartDAFB
Move.l A3,A0 ; Get spBlock ptr into A0.
Clr.b spSlot(A0) ; We only care about Slot $0.
Clr.b spExtDev(A0) ; (No external device.)
Move.w #catDisplay,spCategory(A0) ; Look for: Display,
Move.w #typVideo,spCType(A0) ; Video,
Move.w #drSwApple,spDrvrSW(A0) ; Apple,
Move.w #drHwDAFB,spDrvrHW(A0) ; DAFB.
Clr.l spParamData(A0) ; Look only for enabled sRsrcs.
Bset #foneslot,spParamData+3(A0) ; Limit search to this slot only.
_GetTypeSRsrc ; If built-in video is not on, then
Bne AllDone ; just quit.
Move.w spRefNum(A0),D5 ; If we aren<65>t the startup screen,
Beq.s @NoDrvr ; then do the pRAM stuff.
Clr.b csMode(A2) ; To enable page mode, clear csMode.
Move.l A4,A0 ; Set up for the Control call:
Move.w D5,ioRefNum(A0) ; ioRefNum.
Move.w #cscPageMode,csCode(A0) ; csCode.
Move.l A2,csParam(A0) ; csParam.
_Control ,Immed ; SetPageMode.
Cmp.b #Zydeco_MinVer,minorVers(A6) ; If this is a Zydeco ROM,
Beq AllDone ; then we<77>re done.
Bra.s @SRsrcPatches ; Otherwise, just go on.
@NoDrvr
Suba #SizesPRAMRec,Sp ; Make an sPRAM block on the stack.
Move.l Sp,spResult(A0) ; Point to it.
_sReadPRamRec ; Get pRAM.
Bset #spPageMode,SP_Flags(Sp) ; Tell the PrimaryInit to turn PageMode on,
Beq.s @EnableIt ; if it isn<73>t already.
Adda #SizesPRAMRec,Sp ; Otherwise, restore the stack.
Cmp.b #Zydeco_MinVer,minorVers(A6) ; If this is a Zydeco ROM,
Beq AllDone ; then we<77>re done.
Bra.s @SRsrcPatches ; Otherwise, just go on.
@EnableIt
Move.l Sp,spsPointer(A0) ; Set up to whack pRam.
_sPutPRAMRec ; Whack it.
Adda #SizesPRAMRec,Sp ; Restore the stack.
Cmp.b #Zydeco_MinVer,minorVers(A6) ; If this is a Zydeco ROM,
Beq AllDone ; then we<77>re done.
_sFindDevBase ; Otherwise, get the DAFB baseAddress<73>
Move.l spResult(A0),D0 ; <09>into D0.
Andi.l #$FF000000,D0 ; Strip it of any offsets.
Addi.l #DAFBBase,D0 ; Point to DAFB registers.
Move.l D0,A0 ; Get it into A0.
Moveq #true32b,D0 ; Setup to swap into 32-bit addressing mode.
_SwapMMUMode ; Do swap.
Move.l #1,DAFB_PgMdEn(A0) ; Enable DAFB PageMode (unconditionally).
_SwapMMUMode ; Swap back into previous addressing mode.
;
; Note: If I had the time, I would re-write the following code in a table-driven sort of way.
; But this patch started out small, and I ran out time.
;
@SRsrcPatches
Move.b #0,downSizeSRsrc(A6) ; Genererally, we<77>re going from a 'b' to an 'a' sRsrc.
Move.b #1,hasFamilies(A6) ; All the interlaced displays have family members.
Move.l A3,A0 ; Get spBlock ptr back into A0.
Clr.b spSlot(A0) ; We only care about Slot $0.
Clr.b spExtDev(A0) ; (No external device.)
Clr.l spParamData(A0) ; Clear the fNext flag; we want THIS sRsrc.
Bset #foneslot,spParamData+3(A0) ; Limit search to this slot only.
Move.b #sRsrc_Vid_DAFB_RGBFPbx,spID(A0) ; Look for the RGB Portrait<69>s sRsrc.
_GetsRsrc ; If we found the RGB Portrait sRsrc,
Beq @SetupForRGBPort ; then do specifics.
Move.b #sRsrc_Vid_DAFB_RGB2Pbx,spID(A0) ; Otherwise, look for Vesuvio<69>s sRsrc.
_GetsRsrc ; If we found it,
Beq @SetUpForVesuvio ; then do specifics.
Move.b #sRsrc_Vid_DAFB_NTSCSTb,spID(A0) ; Otherwise, look for NTSC STb<54>s sRsrc.
_GetsRsrc ; If we found it,
Beq @SetUpForNTSCST ; then do specifics.
Move.b #sRsrc_Vid_DAFB_NTSCSTa,spID(A0) ; Otherwise, look for NTSC STa<54>s sRsrc.
_GetsRsrc ; If we found it,
Beq @SetUpForNTSCSTa ; then do specifics.
Move.b #sRsrc_Vid_DAFB_NTSCFFb,spID(A0) ; Otherwise, look for NTSC FFb<46>s sRsrc.
_GetsRsrc ; If we found it,
Beq @SetUpForNTSCFF ; then do specifics.
Move.b #sRsrc_Vid_DAFB_NTSCFFa,spID(A0) ; Otherwise, look for NTSC FFa<46>s sRsrc.
_GetsRsrc ; If we found it,
Beq @SetUpForNTSCFFa ; then do specifics.
Move.b #sRsrc_Vid_DAFB_PALSTb,spID(A0) ; Otherwise, look for PAL STb<54>s sRsrc.
_GetsRsrc ; If we found it,
Beq @SetUpForPALST ; then do specifics.
Move.b #sRsrc_Vid_DAFB_PALSTa,spID(A0) ; Otherwise, look for PAL STa<54>s sRsrc.
_GetsRsrc ; If we found it,
Beq @SetUpForPALSTa ; then do specifics.
Move.b #sRsrc_Vid_DAFB_PALFFb,spID(A0) ; Otherwise, look for PAL FFb<46>s sRsrc.
_GetsRsrc ; If we found it,
Beq @SetUpForPALFF ; then do specifics.
Move.b #sRsrc_Vid_DAFB_PALFFa,spID(A0) ; Otherwise, look for PAL FFa<46>s sRsrc.
_GetsRsrc ; If we found it,
Beq @SetUpForPALFFa ; then do specifics.
Bra AllDone ; Otherwise, just go home.
@SetupForRGBPort
Move.l #DAFBStdOffset,D7 ; Set up for vRam check below.
Move.b #sRsrc_Vid_DAFB_RGBFPb,D6 ; SpID of sRsrc we<77>ll need to re-insert.
Move.b #0,hasFamilies(A6) ; This configuration has no families.
Bra @DoDrvrChk
@SetupForVesuvio
Move.l #DAFBBSOffset,D7 ; Set up for vRam check below.
Move.b #sRsrc_Vid_DAFB_RGB2Pb,D6 ; SpID of sRsrc we<77>ll need to re-insert.
Move.b #0,hasFamilies(A6) ; This configuration has no families.
Bra.s @DoDrvrChk
@SetupForNTSCST
Move.l #DAFBNTSCOffset,D7 ; Set up for vRam check below.
Move.b #sRsrc_Vid_DAFB_NTSCSTa,D6 ; SpID of sRsrc we<77>ll need to re-insert.
Bra.s @DoDrvrChk
@SetupForNTSCSTa
Move.l #DAFBNTSCOffset,D7 ; Set up for vRam check below.
Move.b #sRsrc_Vid_DAFB_NTSCSTb,D6 ; SpID of sRsrc we<77>ll need to re-insert.
Move.b #1,downSizeSRsrc(A6) ; DownSize instead of upSize sRsrc.
Bra.s @DoDrvrChk
@SetupForNTSCFF
Move.l #DAFBNTSCOffset,D7 ; Set up for vRam check below.
Move.b #sRsrc_Vid_DAFB_NTSCFFa,D6 ; SpID of sRsrc we<77>ll need to re-insert.
Bra.s @DoDrvrChk
@SetupForNTSCFFa
Move.l #DAFBNTSCOffset,D7 ; Set up for vRam check below.
Move.b #sRsrc_Vid_DAFB_NTSCFFb,D6 ; SpID of sRsrc we<77>ll need to re-insert.
Move.b #1,downSizeSRsrc(A6) ; DownSize instead of upSize sRsrc.
Bra.s @DoDrvrChk
@SetupForPALST
Move.l #DAFBPALOffset,D7 ; Set up for vRam check below.
Move.b #sRsrc_Vid_DAFB_PALSTa,D6 ; SpID of sRsrc we<77>ll need to re-insert.
Bra.s @DoDrvrChk
@SetupForPALSTa
Move.l #DAFBPALOffset,D7 ; Set up for vRam check below.
Move.b #sRsrc_Vid_DAFB_PALSTb,D6 ; SpID of sRsrc we<77>ll need to re-insert.
Move.b #1,downSizeSRsrc(A6) ; DownSize instead of upSize sRsrc.
Bra.s @DoDrvrChk
@SetupForPALFF
Move.l #DAFBPALOffset,D7 ; Set up for vRam check below.
Move.b #sRsrc_Vid_DAFB_PALFFa,D6 ; SpID of sRsrc we<77>ll need to re-insert.
Bra.s @DoDrvrChk
@SetupForPALFFa
Move.l #DAFBPALOffset,D7 ; Set up for vRam check below.
Move.b #sRsrc_Vid_DAFB_PALFFb,D6 ; SpID of sRsrc we<77>ll need to re-insert.
Move.b #1,downSizeSRsrc(A6) ; DownSize instead of upSize sRsrc.
; In the TERROR ROM, some sRsrcs are not pruned because vRam is tested incorrectly. So,
; we must ensure that 2 Megs of vRam actually exist. If the driver is already installed,
; then we can get the device baseAddress from the AuxDCE. If it isn<73>t installed, then
; we must ask the Slot Manager what it is. A similar, but opposite problem, exists
; on the NTSC/PAL non-convolved displays when going from 2 Megs of RAM down to 1 Meg;
; that is, the 1 Meg sRsrc is not pruned when it should be.
;
; Note: The Nop in the vRAM check below is used because DAFB<46>s address space is non-serial,
; and we must have the writes occur before the reads.
;
@DoDrvrChk
Moveq #0,D5 ; Zero out D5 for the refNum.
Move.w spRefNum(A0),D5 ; If we aren<65>t the startup screen,
Beq.s @DrvrNotInstalled ; the driver won<6F>t be installed.
Move.w D5,D4 ; Save refNum for later.
Not.w D5 ; Otherwise, convert the refNum into
Lsl.w #2,D5 ; a UTable index.
Add.l UTableBase,D5 ; Get a ptr to AuxDCEHandle.
Move.l D5,A0 ; Get it into A0.
Move.l (A0),A0 ; Get the AuxDCEHandle.
Move.l (A0),A0 ; Get the AuxDCEPtr.
Move.l A0,D5 ; Save it for later.
Move.l dCtlDevBase(A0),A0 ; Get the DAFB baseAddress into A0.
Bra.s @DoDAFBVRamChk
@DrvrNotInstalled
_sFindDevBase ; Get the DAFB baseAddress<73>
Move.l spResult(A0),A0 ; <09>into A0.
@DoDAFBVRamChk
Moveq #true32b,D0 ; Setup to swap into 32-bit addressing mode.
_SwapMMUMode ; Do swap.
Sub.l D7,A0 ; Subtract off the offset to get the raw base.
Move.l #'2MEG',(k2MvRAM-4,A0) ; Attempt to write to the last four bytes of bank 3.
Nop ; (See note above.)
Cmp.l #'2MEG',(k2MvRAM-4,A0) ; If there really are 2 Megs of vRam,
Seq D1 ; then say so.
_SwapMMUMode ; Swap back into previous addressing mode.
Tst.b D1 ; If we found 2 Megs, then see
Bne.s @ChkDownSize ; if we need to downSize before leaving.
Tst.b downSizeSRsrc(A6) ; If we think we need to do a downSize
Bne AllDone ; then go home (this is the upSize case).
Bra.s @UpdtSRsrcs ; Otherwise, do upSize updated.
@ChkDownSize
Tst.b downSizeSRsrc(A6) ; If we need to downSize,
Bne.s @UpdtSRsrcs ; then do downSize update.
Bra AllDone ; Otherwise, go home.
; Delete the bad sRsrc and insert a good one.
;
@UpdtSRsrcs
Move.l A3,A0 ; Get the spBlock ptr back into A0.
_sDeleteSRTRec ; Delete the wrong sRsrc.
Move.b D6,spID(A0) ; Say that we want to re-insert the right sRsrc.
Clr.l spsPointer(A0) ; Tell the Slot Manager to look for it in ROM.
Clr.l spParamData(A0) ; And enable it.
_InsertSRTRec
Clr.l spParamData(A0) ; Enable NTSC/PAL disabled sRsrc.
_SetSRsrcState
; Check Slot pRAM. If the depth is set to 16/32bpp, then someone probably had two megs of vRam and
; took them out. In this case, we switch back to 1bpp to be consistent with the other configs
; where a change in memory size forces us back to firstVidMode. We don<6F>t invalidate the
; 'scrn' resource explicitely so that other displays aren<65>t torched.
;
; Note: If we<77>re the boot screen and we have to switch from 16/32bpp to 1bpp, the <20>Welcome To Mac<61>
; box is going to go away sooner than usual.
;
Suba #SizesPRAMRec,Sp ; Allocate a Slot PRAM record on the stack.
Move.l Sp,spResult(A0) ; Point to it.
_sReadPRAMRec
Tst.l D5 ; If the driver is not installed,
Beq.s @ChkDepth ; just check the depth.
Move.l D5,A0 ; Otherwise get the AuxDCEPtr back into A0, and
Move.b D6,dCtlSlotID(A0) ; update the spID.
Move.l dCtlStorage(A0),A0 ; Get the Handle to DAFB private storage.
Move.l (A0),A0 ; Make it a pointer.
Move.b D6,saveSlotId(A0) ; Update the saved slot ID.
Move.l saveVidPtr(A0),A0 ; Set up to dispose old vidParms ptr.
_DisposPtr ; Dispose it.
Move.l A3,A0 ; Get the spBlock ptr back into A0.
_sRsrcInfo ; Get the spsPointer to the functional sRsrc.
Move.b #sVidParmDir,spID(A0) ; Get the vidParams directory.
_sFindStruct
Move.b D6,spID(A0) ; Get the vidParams.
_sGetBlock
Move.l spResult(A0),-(Sp) ; Save the vidParams ptr on the stack.
Move.l D5,A0 ; Get the AuxDCEPtr back into A0.
Move.l dCtlStorage(A0),A0 ; Get the Handle to DAFB private storage.
Move.l (A0),A0 ; Make it a pointer.
Move.l (Sp)+,saveVidPtr(A0) ; Save the vidParams into the DAFB privates.
@ChkDepth
Move.b SP_Depth(Sp),D0 ; Get the current pixel depth.
Cmp.b #FifthVidMode,D0 ; If it<69>s not at 16/32bpp, then
Bne.s @WhackEm ; just whack pRAM.
Move.b #FirstVidMode,SP_Depth(Sp) ; Otherwise, set up pRam for 1bpp.
Tst.l D5 ; If the driver is not installed,
Beq.s @WhackEm ; just whack pRam.
; Set the depth to 1bpp<70>
;
Move.w D4,D0 ; Pass the driver refNum in D0.
Move.l #FirstVidMode,D1 ; Pass the vidMode in D1.
Bsr SwitchDepths ; Switch depths by calling our utility.
@WhackEm
Move.l A3,A0 ; Get spBlock ptr back into A0.
Tst.b hasFamilies(A6) ; If this config doesn<73>t have families,
Beq.s @NoFamilies ; then just go on.
Move.b D6,SP_LastConfig(Sp) ; Otherwise, set up pRAM for next re-boot.
@NoFamilies
Move.l Sp,spsPointer(A0) ; Set up Slot PRAM block, and
_sPutPRAMRec ; write it out.
Adda #SizesPRAMRec,Sp ; Restore the stack.
Bra AllDone ; Go home.
; In the TERROR ROM, the Bungee (1.1) version of the 4<>8/8<>24 Card ROM is incorrectly patched out.
; This problem occurs because the Trident (1.0/1.0.1) version of the 4<>8/8<>24 Card ROM is a
; subset of the Bungee ROM. However, the Bungee code was used to patch out the Trident (byte-
; lane smearing) problems. Because Trident doesn<73>t support PAL displays, that part of the Bungee
; code was removed in the TERROR ROM. This is fine on Trident, but blows up on Bungee because
; none of the PAL sRsrcs are removed, ever. So, what we have to do in the System is to
; remove the non-pruned & unsupported sRsrcs left around by the TERROR ROM version of Bungee
; for both Bungee & Trident. The net side-effect for Bungee is that PAL is no longer
; a valid configuration.
;
; Notes:
; 1) This problem is fixed in the Zydeco ROM and does NOT occur with the CheapDate (1.2)
; version of the 4<>8/8<>24 Card ROM on either the TERROR or Zydeco CPU ROMs.
;
; 2) There is one case in the TERROR ROM that we can<61>t patch out. It<49>s pretty obscure,
; but here goes. If a Bungee Card is selected as the boot screen by the TERROR ROM<4F>s
; Start Manager and there is no monitor connected to that card, the machine will hang.
; A way this can happen, for example, is if someone moves their Bungee Card from
; one slot to another, doesn<73>t connect a monitor, and then restarts. Note that if
; the machine didn<64>t hang, we<77>d still be hosed because we would have to reset the
; entire gDevice world, including rebuilding the dummy gDevice if there are no
; other cards around. But that<61>s starting to get beyond the scope of this file,
; especially in code size! Also, it<69>s getting pretty late in the (Regatta) project.
;
; 3) On screens smaller than 640x480, MacsBug gets somewhat confused because the boot
; rectangle is bigger than the final rectangle. Does anyone know how to fix
; this? For Bungee, this is only a problem on Rubik and NTSC underscan
; displays. Luckily, the lowest-numbered unpruned PAL sRsrc is underscan,
; which is 640x480, MacsBug<75>s normal, uncentered size.
;
; 4) We can<61>t support the NTSC 640x480 (overscan) mode because switching to it from
; Monitors causes the subsequent reboot to crash before we get here. The problem
; is that the unpruned PAL baseAddress is too high for NTSC overscan and, hence,
; causes QuickDraw to bus error. So, we just delete the NTSC overscan sRsrcs so
; they aren<65>t seen by Monitors.
;
StartJMFB
Movem.l D3-D7,-(Sp) ; Save work registers.
; Get the boot device info up front so we don<6F>t have to keep looking.
;
Move.l DeviceList,A0 ; Get the device list Handle.
Move.l (A0),A0 ; Make it a pointer.
Moveq #0,D5 ; Zero out D5 for refNum.
Move.w gdRefNum(A0),D5 ; Get the refNum.
Move.w D5,bootRefNum(A6) ; Save it for later.
Not.w D5 ; Convert the refNum into
Lsl.w #2,D5 ; a UTable index.
Add.l UTableBase,D5 ; Get a ptr to AuxDCEHandle.
Move.l D5,A0 ; Get it into A0.
Move.l (A0),A0 ; Get the AuxDCEHandle.
Move.l (A0),A0 ; Get the AuxDCEPtr.
Move.b dCtlSlot(A0),D4 ; Remember which slot contains the boot device.
Move.l dCtlDriver(A0),bootDrvrHndl(A6) ; Save the Handle to its driver.
Moveq #0,D3 ; Start search from slot 0.
Bra.s @StartSearch
; Find the next Trident/Bungee.
;
@NextSlot Addq #1,D3 ; Seed search with the next slot number.
Cmp.b #$F,D3 ; If we<77>re trying to search in a slot <20> $F
Bge.s @ExitJMFB ; then just leave.
@StartSearch
Move.l A3,A0 ; Get the spBlock ptr into A0.
Move.b D3,spSlot(A0) ; Set the slot number to search in.
Clr.b spId(A0) ; Begin at id 0.
Clr.b spExtDev(A0) ; No external device.
Clr.b spTBMask(A0) ; No mask in search.
Move.w #catDisplay,spCategory(A0) ; Look for: Display,
Move.w #typVideo,spCType(A0) ; Video,
Move.w #drSwApple,spDrvrSW(A0) ; Apple,
Move.w #drHwJMFB,spDrvrHW(A0) ; JMFB.
Clr.l spParamData(A0) ; Look only for enabled sRsrcs.
_GetTypeSRsrc ; If we find a Trident/Bungee,
Beq.s @ChkJMFB ; the go check it out.
@ExitJMFB
Movem.l (Sp)+,D3-D7 ; Otherwise, restore work regs
Rts ; and leave.
; We found a Trident/Bungee.
;
@ChkJMFB
Move.b spSlot(A0),D3 ; Save the slot number we<77>re on for later.
Cmp.b D4,D3 ; If this isn<73>t the boot device,
Bne.s @NoDrvr ; the driver isn<73>t loaded.
; Check to see if the boot screen is a Trident/Bungee.
;
Move.l bootDrvrHndl(A6),A0 ; Get Handle to video driver.
Move.l (A0),A0 ; Get pointer to video driver.
Lea drvrName(A0),A0 ; Point to driver<65>s name.
Move.l A0,D5 ; Save it for later.
Move.b (A0)+,D0 ; Get the length.
Swap D0 ; Save it.
Lea JMFBVideoTitle,A1 ; Point to the driver name we want.
Move.b (A1)+,D0 ; Get its length.
_CmpString ; Compare the names.
Tst.w D0 ; If they are not equal,
Bne.s @NoDrvr ; then our driver is not installed.
Move.l D5,A0 ; Otherwise, reload A0 with a ptr to our driver name,
Bra.s @ChkVersion ; and check the driver version.
@NoDrvr
_sGetDriver ; If we can<61>t load the driver
Bne.s @NextSlot ; then search the next slot.
Moveq #0,D5 ; Flag that the driver is not installed.
Move.l spResult(A0),A0 ; Get Handle to the driver.
Move.l A0,-(Sp) ; Save it (for disposal).
Move.l (A0),A0 ; Get driver pointer.
Lea drvrName(A0),A0 ; Get driver name.
@ChkVersion
Moveq #0,D0 ; Clear D0 (for use as an index).
Move.b (A0),D0 ; Get the length of the driver name.
Addq #2,D0 ; Adjust offset to version field.
Bclr #0,D0 ; Adjust offset for word alignment.
Move.w (A0,D0),D6 ; Save the version number.
Tst.l D5 ; If the driver is already loaded,
Bne.s @ChkIt ; then just go do the check.
Move.l (Sp)+,A0 ; Otherwise, get the driver handle, and
_DisposHandle ; dispose of it.
@ChkIt
Cmp.w #TERRORBungeeVers,D6 ; If this isn<73>t TERROR<4F>s Bungee,
Bne.s @NextSlot ; then search the next slot.
; Make sure we<77>ve really got a Bungee in this slot & not a Trident.
;
Move.l A3,A0 ; Get the spBlock ptr back into A0.
Move.b D3,spSlot(A0) ; Set the slot number we<77>re in.
Move.b #sRsrc_Vid14Au,spID(A0) ; Look for this sRsrc.
Clr.b spExtDev(A0) ; No external device.
Clr.b spTBMask(A0) ; No mask in search.
Move.w #catDisplay,spCategory(A0) ; Look for: Display,
Move.w #typVideo,spCType(A0) ; Video,
Move.w #drSwApple,spDrvrSW(A0) ; Apple,
Move.w #drHwJMFB,spDrvrHW(A0) ; JMFB.
Clr.l spParamData(A0) ; Look only for enabled sRsrcs.
Bset #foneslot,spParamData+3(A0) ; Limit search to this slot only.
_GetSRsrc ; If this is not a Bungee (must be a Trident),
Bne.s @NextSlot ; then search the next slot.
Tst.l D5 ; If the driver is not already loaded,
Beq.s @PruneEm ; then start pruning.
Move.l A4,A0 ; Otherwise, point A0 at the I/O param block.
Move.w bootRefNum(A6),ioRefNum(A0) ; Set the refNum.
_Close ; Close the driver.
@PruneEm
Lea JMFBSRsrcTable,A1 ; Point to the table of unsupported sRsrc IDs.
Move.w (A1)+,D1 ; Load D1 with the size of the table.
Move.l A3,A0 ; Get the spBlock ptr back into A0.
@NextSRsrc Move.b (A1)+,spID(A0) ; Get one of the sRsrc IDs to prune.
Clr.l spParamData(A0) ; Set up to enable any disabled sRsrc.
_SetSRsrcState ; Enable it.
_sDeleteSRTRec ; Prune it.
Dbra D1,@NextSRsrc ; Repeat until done.
Tst.l D5 ; If the driver is not already loaded,
Beq.s @NextSlot ; then search next slot.
Move.b D3,spSlot(A0) ; Set the slot number to search in.
Clr.b spId(A0) ; Begin at id 0.
Clr.b spExtDev(A0) ; No external device.
Move.w #catDisplay,spCategory(A0) ; Look for: Display,
Move.w #typVideo,spCType(A0) ; Video,
Move.w #drSwApple,spDrvrSW(A0) ; Apple,
Move.w #drHwJMFB,spDrvrHW(A0) ; JMFB.
Clr.l spParamData(A0) ; Look only for enabled sRsrcs.
Bset #foneslot,spParamData+3(A0) ; Limit search to this slot only.
_GetTypeSRsrc ; If all the spIDs were not deleted,
Beq.s @CleanupDevice ; then go clean up this gDevice.
; <20><><EFBFBD>
_Debugger ; Call 911, we<77>re dead. (See note #2 above.)
; <20><><EFBFBD>
Bra.s @NextSlot ; Search the next slot.
@CleanupDevice
Move.b spID(A0),D6 ; Save the remaining spID for later.
Suba #SizesPRAMRec,Sp ; Make an sPRAM block on the stack.
Move.l Sp,spResult(A0) ; Point to it.
_sReadPRamRec ; Get pRAM.
Moveq #0,D7 ; Clear D7 (because InitGDevice likes longs).
Move.b SP_Depth(Sp),D7 ; Save the bit depth.
Adda #SizesPRAMRec,Sp ; Restore the stack.
Move.l D5,ioFileName(A4) ; Point to our driver name.
Move.b D3,ioSlot(A4) ; Set the slot number we<77>re on.
Move.b D6,ioId(A4) ; Set the sRsrc ID.
Clr.l ioMix(A4) ; No extra data.
Clr.w ioFlags(A4) ; Clear the flags.
Clr.b ioPermssn(A4) ; R/W permissions.
Move.l A4,A0 ; Point A0 at the I/O param block.
_HOpen ; Re-open the video driver.
Subq #2,Sp ; Make a DefVideoRec on the stack.
Move.l Sp,A0 ; Point to it.
_GetVideoDefault ; Get it.
Moveq #0,D0 ; Set up to compare current status with default.
Move.b D3,D0 ; Get the slot number we<77>re on.
Lsl.w #8,D0 ; Shift it over.
Move.b D6,D0 ; Get the sRsrc (spID).
Cmp.w (A0),D0 ; If the current status is the default,
Beq.s @SkipReset ; then no need to reset.
Move.b #firstVidMode,D7 ; Otherwise, set up to switch to 1bpp, and
Move.w D0,(A0) ; reset the DefVideoRec for the next reboot.
_SetVideoDefault ; Do it.
@SkipReset Addq #2,Sp ; Clean up the stack.
Move.l Devicelist,A0 ; Get Handle to device list.
Move.l (A0),A0 ; Make it a pointer.
Move.w ioRefNum(A4),D0 ; Get the driver<65>s new refNum into D0.
Move.w D0,gdRefNum(A0) ; Update the gDevice with the new refNum.
Clr.l gdMode(A0) ; Make InitGDevice clean up for us.
Move.l D7,D1 ; Push the depth in D1.
Bsr SwitchDepths ; Switch depths using our utility.
Bra.s @NextSlot ; Search the next slot.
EndWith
; Start looking for TFB frame buffer cards on non-TERROR/Zydeco ROM CPUs.
;
StartTFB
MOVE.B #0,spSlot(A3) ;Begin at Slot-0.
CLR.B spId(A3) ;Begin at id-0
CLR.B spExtDev(A3) ;No external device.
CLR.B spTBMask(A3) ;No mask.
MOVE.W #catDisplay,spCategory(A3) ;Look for: Display,
MOVE.W #TypVideo,spCType(A3) ; Video,
MOVE.W #DrSwApple,spDrvrSW(A3) ; Apple,
MOVE.W #DrHwTFB,spDrvrHW(A3) ; TFB.
; Find next video driver of type 'Display_Video_Apple_TFB'.
;
@Repeat
MOVE.L A3,A0
_sNextTypeSRsrc
BNE AllDone
; Check the revision.
;
MOVEQ #0,D5 ;clear the hi half of the register <PB273> DAF
MOVE.W spRefNum(A3),D5 ;Get the refnum.
BEQ.S @Repeat ;if zero, then continue
NOT.W D5 ;Convert it to a unit table index, step 1.
LSL.W #2,D5 ;Convert it to a unit table index, step 2.
ADD.L UTableBase,D5 ;Saved pointer to video driver entry.
MOVE.L D5,A0 ;Pointer to video driver entry.
MOVE.L (A0),A0 ;Get handle to DCE.
MOVE.L (A0),A0 ;Get pointer to DCE.
MOVE.L A0,D6 ;Save pointer to DCE.
MOVE.L dCtlDriver(A0),A0 ;Get handle to driver.
MOVE.L A0,D4 ;Save handle to driver.
MOVE.L (A0),A0 ;Get pointer to driver.
LEA drvrName(A0),A0 ;Point to the driver name.
; Compare the driver names so we don't kill the stupid SuperMac card that thinks it's a TFB<46>
;
MOVEQ #0,D0 ;Prepare D0.
MOVE.B (A0),D0 ;Get the length of the driver name.
MOVE.W D0,D1 ;make a copy <1.4>
ADDQ #2,D1 ;Adjust offset to version field (len + 1)
BCLR #0,D1 ;Adjust offset for Word alignment.
MOVE.W (A0,D1.W),D1 ;Get the version number
CMP.W #CurTFBDrvrVersion,D1 ;Check version.
BGE.S @Repeat ;Branch if current version is greater or same.
SWAP D0 ; get 1st str length in hi word <SXXX/28Oct87> DAF
Addq #1,A0 ; point to text of driver name (skip length byte).
LEA TFBVideoTitle,A1 ; get pointer to video title <SXXX/28Oct87> DAF
MOVE.B (A1)+,D0 ; get 2nd str length in lo word <SXXX/28Oct87> DAF
_CmpString ; are they equal? (case-insensitive)
TST D0 ; test result
BNE.S @Repeat ; different name, so continue search
; Search device list for this driver.
;
MOVE.L DeviceList,A1 ;Get head of device list.
MOVE.L A1,D7 ;Save handle to first entry.
MOVE.L (A1),D0 ;Point to the first entry in the list.
BEQ AllDone ;Done if empty list.
@10 MOVE.L D0,A1 ;Put ptr in A1.
MOVE.W spRefNum(A3),D0 ;Get RefNum.
CMP.W GDRefNum(A1),D0 ;Have we found the RefNum?
BEQ.S @GetPStorage ;Branch if found.
MOVE.L GDNextGD(A1),D7 ;Save handle to next GD.
BEQ.S @Repeat ;Branch if no more GD's.
MOVE.L D7,A1 ;Put ptr in A1.
MOVE.L (A1),D0 ;Point to GD.
BEQ.S @Repeat ;Branch if no more GD's.
BRA.S @10 ;Continue looking for RefNum.
; Get the necessary private storage.
;
@GetPStorage
MOVE.L D6,A0 ;Pointer to DCE.
MOVE.L dCtlStorage(A0),A0 ;Handle to private storage.
MOVE.L (A0),A0 ;Pointer to private storage.
MOVE.W saveMode(A0),sMode(A6) ;Save the mode.
MOVE.W savePage(A0),sPage(A6) ;Save the Page.
MOVE.W GFlags(A0),sGFlags(A6) ;Save the GFlags.
MOVE.L GammaPtr(A0),A1 ;Get the GammaPtr.
MOVE.L saveSQElPtr(A0),sSQEl(A6) ;get the slot interrupt queue pointer <1.3>
MOVE.L A1,A0 ; copy the gamma ptr
_GetPtrSize ; get the size of the current table
MOVE.L D0,D1 ; make a copy of it
_NewPtr ,SYS ; allocate another ptr of that size in sys
BNE @Repeat ;Branch if error
MOVE.L D1,D0 ; get the gamma table size again
EXG A0,A1 ; copy the gamma table
_BlockMove ; duplicate it
BNE @Repeat ;
MOVE.L A1,sGammaPtr(A6) ;Save the GammaPtr
; Since the gamma data in the boot driver is still inverted, invert the data in place
;
MOVE.W GFormulaSize(A1),D0 ; get the size of the formula data
MOVE.W GChanCnt(A1),D1 ; get the number of channels
SUBQ #1,D1 ; adjust for DBRA
ADDA #GFormulaData,A1 ; point to formula data
ADDA D0,A1 ; advance to gamma data
@ChanLoop MOVE.W #255,D0 ; loop count within each channel
@entryLoop NOT.B (A1)+ ; invert the values
DBRA D0,@entryLoop ; for each entry in channel
DBRA D1,@ChanLoop ; and each channel
; Close and dispose of the driver.
;
MOVE.L D7,A1 ;Restore A1.
MOVE.L (A1),A1 ; get pointer <!!!DAF>
CLR.L ioCompletion(A4) ;No completion routine.
MOVE.W GDRefNum(A1),ioRefNum(A4) ;The device RefNum.
MOVE.L A4,A0 ;Set A0 for use by ioCore.
_Close ;Close the driver.
BNE @Repeat ;Branch if error.
MOVE.L sSQEl(A6),A0 ;deallocate the slot interrupt queue elem <1.3>
MOVEQ #0,D0 ;clear the register <1.3>
MOVE.B spSlot(A3),D0 ;get slot number in D0 <1.3>
_SIntRemove ;take it out of the queue <1.3>
MOVE.L D4,A0 ;Get handle to driver.
_DisposHandle ;Dispose of the driver.
MOVE.L D5,A1 ;Get ptr to UT entry.
MOVE.L (A1),A0 ;Get handle to DCE.
_DisposHandle ;Dispose of the DCE.
CLR.L (A1) ;Clear entry in UT.
LEA TFBVideoTitle,A1 ;Get the name of the driver.
MOVE.L A1,ioFileName(A4) ;Set parameter.
MOVE.B spSlot(A3),ioSlot(A4) ;Slot and
MOVE.B spId(A3),ioId(A4) ;sResource Id.
CLR.L ioMix(A4) ;No extra data.
CLR.W ioFlags(A4) ;Clear the flags.
CLR.B ioPermssn(A4) ;R/W permissions.
MOVE.L A4,A0 ;Set A0 for use by ioCore.
_HOpen ;Open the video driver, using the extended parameter block. <C208>
MOVE.L D7,A0 ;Handle to the GDev.
MOVE.L (A0),A0 ;Pointer to the GDev.
MOVE.W ioRefNum(A4),GDRefNum(A0) ;Save the new RefNum.
; Detach the resource and restore the private storage.
;
MOVE.W ioRefNum(A4),D0 ;Get the refnum.
EXT.L D0 ; <!!!DAF>
NOT.L D0 ;Convert it to a unit table index, step 1.
LSL.L #2,D0 ;Convert it to a unit table index, step 2.
ADD.L UTableBase,D0 ;Saved pointer to video driver entry.
MOVE.L D0,A0 ;Pointer to video driver entry.
MOVE.L (A0),A0 ;Get handle to DCE.
MOVE.L (A0),A0 ;Get pointer to DCE.
MOVE.L A0,-(SP) ;Save A0
MOVE.L dCtlDriver(A0),-(SP) ;Get handle to driver.
_DetachResource ;Detach it.
MOVE.L (SP)+,A0 ;Restore A0
MOVE.L dCtlStorage(A0),A0 ;Handle to private storage.
MOVE.L (A0),A0 ;Pointer to private storage.
MOVE.W sMode(A6),saveMode(A0) ;Restore the mode.
MOVE.W sPage(A6),savePage(A0) ;Restore the Page.
MOVE.W sGFlags(A6),GFlags(A0) ;Restore the GFlags.
MOVE.L GammaPtr(A0),A1 ;Get the new gammaPtr.
MOVE.L sGammaPtr(A6),GammaPtr(A0) ;Restore the original gamma table.
MOVE.L A1,A0 ;Prepare to dispose of new gamma table.
_DisposPtr ;Dispose it.
BRA @Repeat ;Continue loop.
; Clean up and go home.
;
AllDone
ADD.W #IOQElSize+spBlockSize+12,SP ;Deallocate parameter blocks.
MOVEM.L (SP)+,A2-A4/D4-D7 ;Restore registers.
UNLK A6 ;Deallocate stack frame.
ENDWITH
Reference in New Issue Copy Permalink