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sys7.1-doc-wip/DeclData/DeclVideo/CSC/CSCPrimaryInit.a
Horst Beepmanh 33cd9271f4 SuperMarioProj.1994-02-09
2019-07-27 22:37:48 +08:00

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;
; File: CSCPrimaryInit.a
;
; Written by: Mike Puckett, December 20, 1992.
;
; Copyright: © 1991-1993 by Apple Computer, Inc., all rights reserved.
;
; Change History (most recent first):
;
; <SM2> 12/13/93 PN Roll in KAOs and Horror changes to support Malcom and AJ
; machines
; <1> 01-12-93 jmp first checked in
; <H2> 01-05-93 jmp Added some temporary family modes to test out 16bpp.
; <1> 12-23-92 jmp first checked in
PRINT OFF
LOAD 'StandardEqu.d'
INCLUDE 'HardwarePrivateEqu.a'
INCLUDE 'ROMEqu.a'
INCLUDE 'Video.a'
INCLUDE 'SlotMgrEqu.a'
INCLUDE 'SonicEqu.a'
INCLUDE 'UniversalEqu.a'
INCLUDE 'DockingEqu.a'
INCLUDE 'PowerPrivEqu.a'
INCLUDE 'DepVideoEqu.a'
PRINT ON
SEG '_sCSCPrimaryInit'
BLANKS ON
STRING ASIS
MACHINE MC68020
CSCPrimaryInit Main Export
;---------------------------------------------------------------------
; Header
;---------------------------------------------------------------------
Dc.b sExec2 ; Header
Dc.b sCPU68020
Dc.w 0
Dc.l BeginCSCInit-*
;---------------------------------------------------------------------
; Local variables, definitions, etc....
;---------------------------------------------------------------------
With SEBlock,SPBlock
CSCFrame Record {A6Link},Decrement
Return Ds.l 1 ; Return address.
A6Link Ds.l 1 ; Saved A6.
spBlk Ds SPBlock ; SpBlock for generic use.
sPRAMBlk Ds.b SizeSPRAMRec ; sPRAMRec for generic use.
configParamsPtr Ds.l 1 ; Pointer to configruation parameters.
vidParamsPtr Ds.l 1 ; Pointer to video parameters.
mscBaseAddr Ds.l 1 ; Don’t want to look up MSC’s address more than once.
prodID Ds.b 1 ; For easily distinguishing between products.
disableLCD Ds.b 1 ; When true, we’re shutting the LCD down.
CSCFSize Equ *
Endr
Endwith
CSCProdCnfgRec Record 0 ;
memConfig Ds.b 1 ; Physical VRAM configuration type.
refreshRate Ds.b 1 ; The desired refresh rate.
vramControl Ds.b 1 ; CPU/VRAM interface control.
Ds.b 1 ; <pad>
CSCProdCnfgSize Equ *
Endr
CSCVRAMCnfgRec Record 0 ;
sRsrcID Ds.b 1 ; sRsrc ID for this VRAM configuration.
modeID Ds.b 1 ; Favored modeID (depth).
boxID Ds.b 1 ; BoxFlag to write out.
Ds.b 1 ; <pad>
familiesOffset Ds.w 1 ; Offset to family mode table.
CSCVRAMCnfgSize Equ *
Endr
With MiniGamma,CSCVRAMCnfgRec
CSCCnfgRec Record 0
gammaTbl Ds.b GT_Size ; Mini-gamma table (defined in PrimaryInit.a).
CSCCnfgHdrSize Equ *
csc512KVRAM Ds.b CSCVRAMCnfgSize ; 512K vRAM preferences.
CSCCnfgRecSize Equ *
Endr
CSCCnfgTblSize Equ (8*CSCCnfgRec.CSCCnfgRecSize) ; 0..7 (8) Panel IDs per table.
Endwith
;---------------------------------------------------------------------
; Utils
;---------------------------------------------------------------------
;---------------------------------------------------------------------
;
; PruneList
;
; Loops thru a table of sRsrcIDs comparing the “keeper” with each
; of the entries in the table. Those IDs that don’t match
; the keeper are pruned.
;
; -> D0: sRsrcID of the “keeper”
; -> A0: pointer to appropriately filled-out SpBlock
; -> A1: pointer to list of sRsrcIDs
;
; Trashes: D0-D1/A1.
;
With SpBlock
CSCPruneList
Move.b D0,-(Sp) ; Remember the ID of the “keeper.”
Move.w (A1)+,D1 ; Get the zero-based counter into D1.
@Repeat Move.b (A1)+,D0 ; Get an sRsrc ID.
Cmp.b (Sp),D0 ; If it’s the keeper,
Beq.s @Until ; then don’t prune it.
Move.b D0,spID(A0) ; Otherwise, prune it.
_sDeleteSRTRec
@Until Dbra D1,@Repeat ; Loop until done.
Tst.b (Sp)+ ; Clean up the stack.
Rts ; Return to caller.
Endwith
;---------------------------------------------------------------------
;
; BuildFamilyList
;
; Loops thru a table of sRsrcIDs comparing the “keeper” with each
; of the entries in the table. Those IDs that don’t match
; the keeper are inserted back in as disabled.
;
; -> D0: sRsrcID of the “keeper”
; -> A0: pointer to appropriately filled-out SpBlock
; -> A1: pointer to list of sRsrcIDs
;
; Trashes: D0-D1/A1.
;
With SpBlock
CSCBuildFamilyList
Move.b D0,-(Sp) ; Remember the ID of the “keeper.”
Move.w (A1)+,D1 ; Get the zero-based counter into D1.
@Repeat Move.b (A1)+,D0 ; Get an sRsrc ID.
Cmp.b (Sp),D0 ; If it’s the keeper,
Beq.s @Until ; then leave it alone.
Move.b D0,spID(A0) ; Otherwise, load that sRsrc ID.
Clr.l spsPointer(A0) ; Tell the Slot Manager that it’s in ROM.
Move.l #1,spParamData(A0) ; Say that we want it disabled.
Clr.w spRefNum(A0) ; Say that there’s no driver yet.
_InsertSRTRec ; Do it!
@Until Dbra D1,@Repeat ; Loop until done.
Tst.b (Sp)+ ; Clean up the stack.
Rts ; Return to caller.
Endwith
;---------------------------------------------------------------------
; Main
;---------------------------------------------------------------------
With SEBlock,SPBlock,CSCFrame
BeginCSCInit
;
; Set up initial “vendor” status.
;
Link A6,#CSCFSize ; Allocate stack space for locals.
Move.w #seSuccess,seStatus(A0) ; Just say that we’re okay.
;
; Perform some generic initializations.
;
Clr.b spBlk.spSlot(A6) ; Built-in video is always Slot $0.
Clr.b spBlk.spExtDev(A6) ; Why ask why? Just clear this guy.
Move.l UnivInfoPtr,A4 ; Keep a pointer to ProductInfo.
;
; Initialize the BoardID part of the Slot $0 pRAM if necessary, and prune the board sResources.
;
With SP_Params,ProductInfo,VideoInfo
Lea spBlk(A6),A0 ; Point A0 at our local SpBlock.
Lea sPRAMBlk(A6),A2 ; Get a pointer to our local SPRAMBlock.
Move.l A2,spResult(A0) ; Put our pointer in the SpBlock.
_sReadPRAMRec ; Read Slot $0’s pRAM.
Move.l A4,A3 ; Copy the ProductInfo pointer.
Adda.l VideoInfoPtr(A3),A3 ; Point to the VideoInfo record.
Tst.w SP_BoardID(A2) ; If the board ID is non-zero,
Bne.s @PruneBoardSRsrc ; then just go on.
Move.b BoardSRsrcID(A3),spID(A0) ; Get the appropriate board sRsrc ID.
_sRsrcInfo ; Get the spsPointer.
Move.b #BoardID,spID(A0) ; Set up to get the correct board ID.
_sReadWord ; Get it.
Move.w spResult+2(A0),SP_BoardID(A2) ; Save the board ID into pRAM.
Move.l A2,spsPointer(A0) ; Point to the pRAM param block.
_InitSlotPRAM ; Write it out.
@PruneBoardSRsrc
Lea CSCSpIDTbl,A1 ; Point to the table of supported board sRsrcs.
Move.b BoardSRsrcID(A3),D0 ; Get the sRsrc ID of the keeper into D0.
Move.b D0,prodID(A6) ; (Remember the sRsrc ID for later.)
Bsr.s CSCPruneList ; Call our pruning utility.
;
; Set up the right CPU sResource. We only recognize ’030 and ’040 CPUs; all others
; are ignored (i.e., the CPU sResources are all deleted in that case).
;
Move.b CPUFlag,D1 ; Get the CPUFlag (680x0-flag) for compares.
Lea @CPUTable,A1 ; Get pointer to the table of valid CPU types.
@CPULoop Move.b (A1)+,D0 ; Pick up the next CPU type.
Beq.s @EndPruneCPUSRsrcs ; If we’re done, leave.
Move.b (A1)+,spID(A0) ; Assume we won’t find a match.
Cmp.b D0,D1 ; But, if they do match,
Beq.s @SkipDelete ; then just go on.
_sDeleteSRTRec ; Otherwise, delete non-matching CPU sRsrc type.
@SkipDelete Bra.s @CPULoop ; And loop until done.
@CPUTable Dc.b cpu68030,sRsrc_CPUMac030
Dc.b cpu68040,sRsrc_CPUMac040
Dc.b 0,0
@EndPruneCPUSRsrcs
;
; Here’s where we actually get the CSC video going, or we decide whether to just shut
; things down. We’ll end up shutting things down if we either don’t recognize the
; type of LCD attached (which is highly unlikely, since the LCDs are built-in), or
; the LCD is currently in an unuseable state. For example, Escher could be
; docked into a Gemini or an Atlantis, or, in Blackbird’s case, the lid could
; just be closed.
;
CSCVideoInit
Clr.l vidParamsPtr(A6) ; Don’t try to throw away non-existent storage.
; Get some useful values up front.
;
Movea.l A4,A3 ; Copy the ProductInfo pointer.
Adda.l ProductInfo.DecoderInfoPtr(A3),A3 ; Point to the base address table.
Movea.l DecoderInfo.VDACAddr(A3),A3 ; Get the CSC base address into A3.
; First, disable the video interrupts sources as well as the power planes.
;
TestFor MSCChipBit ; If we don’t have an MSC,
Beq.s @NoMSC ; then just go on.
Movea.l A4,A2 ; Copy the ProductInfo pointer.
Adda.l ProductInfo.DecoderInfoPtr(A2),A2 ; Point to the BaseAddr table.
Movea.l DecoderInfo.RBVAddr(A2),A2 ; Point to the MSC’s base address.
Move.l A2,mscBaseAddr(A6) ; Save it for later.
Move.b #(0<<ifIRQ)|(1<<RvIRQ0En),MSCSlotIER(A2) ; Disable CSC interrupts.
Bclr #MSCLCDReset,MSCClkCntl(A2) ; Turn off CSC clock input…
_CSCMinDelay ; …wait for at least 32 PixClks, and
Bset #MSCLCDReset,MSCClkCntl(A2) ; …turn CSC clock input back on to complete reset.
@NoMSC
Clr.b CSCDisplayStatus(A3) ; Disable CSC interrupt source.
Clr.b CSCPanelSetup(A3) ; Disable the panel power.
; Size the amount of VRAM. When done, D4 is set to one of {0,1}, where 0=512K,1=1024K.
; (Note: CSC supports a variety of VRAM types and configuration. At the moment,
; though, we’ll just simply say there’s 512K.)
;
;
With CSCProdCnfgRec
Lea CSCProdTable,A1 ; Point to the CSC ProductTable.
Move.w #CSCProdCnfgSize,D0 ; Get the size of each entry into D0.
Moveq #0,D1 ; Clear D1 for good measure.
Move.b prodID(A6),D1 ; Get the product ID.
Subq #1,D1 ; Normalize it.
Mulu D1,D0 ; Multiply by the right entry.
Adda.w D0,A1 ; Skip to the entry we want.
Move.b memConfig(A1),CSCMemConfig(A3) ; Set up for the right VRAM configuration.
Move.b refreshRate(A1),CSCRefreshRate(A3) ; Set up the refresh rate.
Move.b vramControl(A1),CSCVRAMControl(A3) ; Interface the VRAM correctly to the CPU.
Moveq #0,D4 ; Just say there’s 512K of VRAM for now.
Endwith
; Sense the type of panel to drive. For now, we have no extended-sense panels, so we just
; do a passive read of the panel senselines.
;
Moveq #0,D6 ; Initialize the senseline register.
Move.b #tristateCSC,CSCPanelIDControl(A3) ; Make the senselines inputs.
_CSCMinDelay ; Wait a moment.
Move.b CSCPanelID(A3),D6 ; Read ’em.
; Pick up the favored configuration based on the amount of VRAM and the type of display sensed or assumed.
;
With CSCVRAMCnfgRec,CSCCnfgRec
Lea CSCConfigTable,A1 ; Point to the CSC configuration table.
Move.w #CSCCnfgTblSize,D0 ; Get the size of each table into D0.
Moveq #0,D1 ; Clear D1 for good measure.
Move.b prodID(A6),D1 ; Get the product ID.
Subq #1,D1 ; Normalize it.
Mulu D1,D0 ; Multiply by the right entry.
Adda.w D0,A1 ; Skip to the entry we want.
Move.w #CSCCnfgRecSize,D0 ; Get the size of each entry into D0.
Mulu D6,D0 ; Multiply it by the right entry.
Adda.w D0,A1 ; Skip to the entry we want.
Move.l A1,configParamsPtr(A6) ; Save it for later.
Adda.w #CSCCnfgHdrSize,A1 ; Skip past the header.
Move.w #CSCVRAMCnfgSize,D0 ; Get the size of the VRAM entries.
Mulu D4,D0 ; Multiply by the right entry.
Adda.w D0,A1 ; Skip to the right VRAM entry.
Move.b modeID(A1),D7 ; Get the default mode (depth).
Move.b sRsrcID(A1),D5 ; Get the default sRsrcID.
Cmp.b #sRsrc_CSC_NeverMatch,D5 ; If we’ve come up with an unknown configuration, <K18>
Beq.s @NoAdjustBoxflag ; then skip boxflag adjustment. <K18>
Move.b boxID(A1),BoxFlag ; Set the BoxFlag value based on the PanelID.
@NoAdjustBoxflag
Endwith
; Next, check to see whether or not we should even bring up the CSC.
;
WITH PMgrRec, pmCommandRec
Movea.l PMgrBase,A2 ; point to Power Manager variables
Bclr #ignoreClamshell,PmgrFlags3(A2) ; reset ignore clamshell
Subq #4,Sp ; Make room for the docking result.
Move.l #dockDockingAttr,-(Sp) ; Say that we want the attributes.
Clr.l -(Sp) ; No params.
_DockingDispatch ; Call the Docking Manager.
Move.l (Sp)+,D0 ; Get the attributes.
Btst #dockNoLCDScreen,D0 ; Find out if the LCD is in a useable state.
Beq.s @ClamLook ; can use LCD, but check clamshell first
Bra.s @ClamDone ; set the flag to ignore LCD
;------------------------------------------------------------------------------------------------------ <H28>
; this code checks to see if we're docked, if we have external video, and if the clamshell is closed: |
; in such a case, we want to allow the system to boot on the external monitor but disable the internal v
; monitor and ignore the state of the clamshell switch
@ClamLook Subq.w #4,SP ; result
Move.l #dockHardwareAttr,-(SP) ; docking selector = get hardware attributes
Clr.l -(SP) ; params = nil
_DockingDispatch ; call the handler
Move.l (SP)+,D0
Btst #dockHasVideo,D0 ; do we have external video power?
Beq.s @EndDockChk ; nope, so skip case to ignore clamshell
Clr.w -(SP)
Move.l SP,-(SP) ; pmRBuffer
Move.l (SP),-(SP) ; pmSBuffer
Clr.w -(SP) ; pmLength = 0
Move.w #readExtSwitches,-(SP) ; pmCommand
Movea.l SP,A0 ; point to the parameter block
_PMgrOp ; get the clamshell info
Lea pmRBuffer+4(SP),SP ; toss the parameter block
Btst #clamshell,(SP)+ ; is the clamshell closed?
Beq.s @EndDockChk ; -> nope, all done
Bset #ignoreClamshell,PmgrFlags3(A2) ; set ignore clamshell
@ClamDone St disableLCD(A6) ; don't use internal LCD
Move.b #sRsrc_CSC_NeverMatch,D5 ; Make sure all the sResources get pruned.
Bra @SetConfig ; Skip the dynamic config code.
@EndDockChk
;------------------------------------------------------------------------------------------------------ <H28>
ENDWITH
; Initialize built-in video’s pRAM.
;
With SP_Params
@InitPRAM
Lea sPRAMBlk(A6),A2 ; Point to the sPRAM block.
Move.b SP_Flags(A2),D0 ; Copy the flags byte.
Bfins D4,D0{spVRamBits:numSPVRamBits} ; Load the amount of VRAM.
Move.b D0,SP_Flags(A2) ; Remember how much VRAM we setup for.
Bclr #spFamilyChanged,SP_Flags(A2) ; Always reset the family-changed bit.
Beq.s @EndScrnChk ; If it was already reset, then just go on.
Move.w #drHwCSC,ScrnInval ; Remind ourselves to manually update the 'scrn' resource (so disk can make things right).
@EndScrnChk Move.b D6,SP_MonID(A2) ; Remember which panel we sensed (or assumed).
Cmp.b SP_DfltConfig(A2),D5 ; If this is the same configuration/family we had last time,
Beq.s @WritePRAM ; then just write out the minimal pRAM info.
Move.b D5,SP_LastConfig(A2) ; Set the identification configuration.
Move.b D5,SP_DfltConfig(A2) ; Set the default/family configuration.
Move.b D7,SP_Depth(A2) ; Set the default depth for this configuration.
@WritePRAM Lea spBlk(A6),A0 ; Point to the slot param block.
Move.l A2,spsPointer(A0) ; Set up the pRAM parameter block.
_sPutPRAMRec ; Write out Slot $0’s pRAM.
Move.b SP_LastConfig(A2),D5 ; Get the right (family member) sRsrc into D5.
Endwith
; First, prune all of the video sResources except for the selected one. If there are no families, then we’re done.
; Otherwise, we’re either done (because we’ve come up with an unknown configuration), or we re-insert all the members
; of the selected configuration’s family as disabled.
;
With CSCVRAMCnfgRec,CSCCnfgRec
@SetConfig
Lea spBlk(A6),A0 ; Point A0 at our local SpBlock.
Lea CSCModeList,A1 ; Point to the table of supported video sRsrcs.
Move.b D5,D0 ; Get the sRsrcID of the keeper into D0.
Bsr CSCPruneList ; Call our pruning utility.
Cmp.b #sRsrc_CSC_NeverMatch,D5 ; If we’ve come up with an unknown configuration,
Beq CSCExit ; then we’re now done.
Move.l configParamsPtr(A6),A1 ; Point to this config’s parameters.
Adda.w #CSCCnfgHdrSize,A1 ; Skip past the header.
Move.w #CSCVRAMCnfgSize,D0 ; Get the size of the VRAM entries.
Mulu D4,D0 ; Multiply by the right entry.
Adda.w D0,A1 ; Skip to the right VRAM entry.
Move.w familiesOffset(A1),D0 ; If there aren’t any families,
Beq.s @EndConfig ; then just go on.
Move.l configParamsPtr(A6),A1 ; Point back to this config’s parameters.
Adda.w D0,A1 ; Point to the table of supported families.
Move.b D5,D0 ; Get the sRsrcID of the keeper into D0.
Bsr CSCBuildFamilyList ; Call our family-building utility.
@EndConfig
Endwith
; Initialize the video hardware.
;
With CSCVidParams,MiniGamma
Clr.w spID(A0) ; Start looking at spID 0, no external devices.
Clr.b spTBMask(A0) ; Only look for the board sRsrc.
Move.w #catBoard,spCategory(A0) ; Look for: catBoard,
Move.w #typBoard,spCType(A0) ; typBoard,
Clr.w spDrvrSW(A0) ; 0,
Clr.w spDrvrHW(A0) ; 0.
Clr.l spParamData(A0) ; (The board sRsrc must be enabled.)
Bset #foneslot,spParamData+3(A0) ; Limit search to this slot 0.
_GetTypeSRsrc ; Get the spsPointer.
Move.b #sVidParmDir,spID(A0) ; Look for the video parameters directory.
_sFindStruct
Move.b D5,spID(A0) ; Look in the directory for this config’s params.
_sGetBlock
Move.l spResult(A0),A1 ; Get a pointer to the vidParams.
Move.l A1,vidParamsPtr(A6) ; Save for later disposal.
; Set up the CSC and the Palette (if necessary).
;
Move.b cscvpPanelType(A1),CSCPanelType(A3) ; Set up for the attached panel.
Move.b cscvpPanelSetup(A1),CSCPanelSetup(A3) ;
Move.b cscvpDataOutForm(A1),CSCDataOutputForm(A3) ; Set up the framebuffer.
Move.b cscvpGFRCControl(A1),CSCFRCControl(A3) ;
Move.b cscvpGPolyMAdj(A1),CSCPolyMAdj(A3) ;
Move.b cscvpGPolyNAdj(A1),CSCPolyNAdj(A3) ;
Move.b cscvpHSkewHi(A1),CSCHSkewHi(A3) ; Set up the H/V timing.
Move.b cscvpHSkewLo(A1),CSCHSkewLo(A3) ;
Move.b cscvpVSkewHi(A1),CSCVSkewHi(A3) ;
Move.b cscvpVSkewLo(A1),CSCVSkewLo(A3) ;
Move.b cscvpACDClkHi(A1),CSCACDClkHi(A3) ; Set up the clocking.
Move.b cscvpACDClkLo(A1),CSCACDClkLo(A3) ;
Move.b cscvpLPStart(A1),CSCLPStart(A3) ;
Move.b cscvpLPWidth(A1),CSCLPWidth(A3) ;
Move.b cscvpFLMControl(A1),CSCFLMControl(A3) ;
Clr.b CSCDisplayDataForm(A3) ; Set the panel into 1-bpp mode.
Clr.b CSCGTweak(A3) ; Clear the GTweak register.
Cmpi.b #sRsrc_Vid_CSC_G_D_STN_400,D5 ; If we’re on a fixed panel,
Beq.s @STNTweak ; then just go gray the screen.
Cmpi.b #sRsrc_Vid_CSC_G_D_STN_400y,D5 ;
Beq.s @STNTweak ;
Cmpi.b #sRsrc_Vid_CSC_G_D_STN_480,D5 ;
Beq.s @STNTweak ;
Cmpi.b #sRsrc_Vid_CSC_G_S_TFT_400,D5 ;
Beq.s @TFTTweak ;
Cmpi.b #sRsrc_Vid_CSC_G_S_TFT_400y,D5 ;
Beq.s @TFTTweak ;
Move.b #CSCNoMask,CSCMaskReg(A3) ; Enable all video data in the Palette.
Move.l A3,A2 ; Copy the base address of CSC.
Adda.w #CSCDataReg,A2 ; Point to the Palette data register.
Move.l configParamsPtr(A6),A5 ; Point to the config parameters.
Move.b #$00,CSCAddrRegW-CSCDataReg(A2) ; Setup to write 1bpp white.
Move.b whiteRed(A5),(A2) ; Write: Red,
Move.b whiteGreen(A5),(A2) ; Green,
Move.b whiteBlue(A5),(A2) ; Blue.
Move.b #$80,CSCAddrRegW-CSCDataReg(A2) ; Setup to write 1bpp black.
Move.b blackRed(A5),(A2) ; Write: Red,
Move.b blackGreen(A5),(A2) ; Green,
Move.b blackBlue(A5),(A2) ; Blue.
Bra.s @GrayScreen ;
; Gray the VRAM.
;
@TFTTweak Bset #CSCInvertVRAM,CSCGTweak(A3) ; Invert the VRAM data (for double blacks).
@STNTweak Bset #CSCBetterDither,CSCGTweak(A3) ; Make the dither patterning look better!
@GrayScreen Movea.l A4,A2 ; Copy the ProductInfo pointer.
Adda.l ProductInfo.VideoInfoPtr(A2),A2 ; Point to the VideoInfo record.
Move.l VideoInfo.VRAMLogAddr32(A2),A2 ; Point to the base of VRAM.
Moveq #true32b,D0 ; Set up to flip into 32-bit addressing mode.
_SwapMMUMode ; Do flip.
Move.b D0,-(Sp) ; Save previous addressing mode.
Move.w cscvpNumRows(A1),D3 ; Get the number of rows.
Move.w D3,D0 ; Remember them.
Move.l #OneBitGray,D2 ; Set the 1bpp gray pattern.
@NxtRow Move.w #(OBMLCDRB/4-1),D1 ; Get the number of longwords/row.
@NxtLong Move.l D2,(A2)+ ; Write out gray to the frame buffer…
Dbra D1,@NxtLong ; …for each scanline.
Not.l D2 ; Invert the pattern for the next row.
Dbra D3,@NxtRow ; Repeat for each row.
Cmpi.w #(defmBounds_BLCD-1)-1,D0 ; If we’re not doing the 16bpp “400-line” panel,
Bne.s @SwapBack ; then just go on.
Moveq #IndexedBlack,D2 ; Set up to write out black to the bottom-most line.
Move.w #(OBMLCDRB/4-1),D1 ; Get the number of longwords/row.
@LastLine Move.l D2,(A2)+ ; Write out black to the last line of…
Dbra D1,@LastLine ; …to whole last line.
@SwapBack Move.b (Sp)+,D0 ; Set up to flip back to previous addressing mode.
_SwapMMUMode ; Do flip.
Move.b #CSCUnblank,CSCDisplayStatus(A3) ; Unblank the video display.
Bset #CSCPnlPwr,CSCPanelSetup(A3) ; Turn on the power.
_CSCMaxDelay ; Wait 50 ms.
Endwith
; Now that the CSC is set up (i.e., either fully programmed for the attached LCD, or is
; completely shutdown), we need to make sure that the panel’s backlighting is
; appropriately set up.
;
CSCExit
TestFor MSCChipBit ; If we don’t have an MSC,
Beq.s @NoMSC ; then just go on.
Movea.l mscBaseAddr(A6),A0 ; Get the MSC base address.
Tst.b disableLCD(A6) ; If we’ll be using the LCD screen,
Beq.s @UseLCD1 ; then just go on.
Bclr #MSCLCDReset,MSCClkCntl(A0) ; Otherwise, turn off CSC clock input.
Bra.s @Dont ; And keep the CSC interrupts off.
@UseLCD1 Move.b #(1<<ifIRQ)|(1<<RvIRQ0En),MSCSlotIER(A0) ; Allow CSC interrupts to occur.
@Dont
@NoMSC Moveq #screenOn-256,D0 ; Assume we’ll be using the LCD.
Tst.b disableLCD(A6) ; If we are, then
Beq.s @UseLCD2 ; just go on.
Moveq #screenOff,D0 ; Otherwise, say that we’re shutting it down.
@UseLCD2
Move.b D0,-(Sp) ; Put the on/off switch into the buffer.
Move.l Sp,-(Sp) ; pmRBuffer
Move.l (Sp),-(Sp) ; pmSBuffer
Move.w #1,-(Sp) ; pmLength = 1
Move.w #power1Cntl,-(Sp) ; pmCommand
Movea.l Sp,A0 ; Point to the param block.
_PMgrOp ; Turn the LCD screen on/off.
Lea pmCommandRec.pmRBuffer+4+2(Sp),Sp ; Toss the param block.
; Clean up and go home.
;
Move.l vidParamsPtr(A6),D0 ; If the vidParamsPtr is nil,
Beq.s @CSCDone ; then just leave.
Movea.l D0,A0 ; Dispose of the vidParams pointer.
_DisposPtr
@CSCDone
Unlk A6 ; De-allocate local stack frame.
Rts ; Return to caller.
Endwith
;---------------------------------------------------------------------
; Data
;---------------------------------------------------------------------
Align 4
; The CSCSpIDTbl is a list of all the board sRsrcIDs supported in the CSC
; sRsrc directory. It is used to prune all the unnecessary board sRsrcs.
;
; The CSCModeList is used to prune the various functional sRsrcs.
;
CSCSpIDTbl Dc.w EndCSCSpIDTbl-BeginCSCSpIDTbl-1
BeginCSCSpIDTbl
Dc.b sRsrc_BdEscher
Dc.b sRsrc_BdBlackBird
Dc.b sRsrc_BdYeager
Dc.b 0
EndCSCSpIDTbl
Align 4
CSCModeList Dc.w EndCSCML-BeginCSCML-2
BeginCSCML
Dc.b sRsrc_Vid_CSC_C_S_TFT_399,sRsrc_Vid_CSC_C_S_TFT_480 ; Escher
Dc.b sRsrc_Vid_CSC_G_D_STN_400
Dc.b sRsrc_Vid_CSC_G_S_TFT_400
Dc.b sRsrc_Vid_CSC_C_S_TFT_399a,sRsrc_Vid_CSC_C_S_TFT_480a ; Blackbird
Dc.b sRsrc_Vid_CSC_C_S_TFT_399b,sRsrc_Vid_CSC_C_S_TFT_480b
Dc.b sRsrc_Vid_CSC_C_S_TFT_399c,sRsrc_Vid_CSC_C_S_TFT_480c
Dc.b sRsrc_Vid_CSC_C_S_TFT_399d,sRsrc_Vid_CSC_C_S_TFT_480d
Dc.b sRsrc_Vid_CSC_C_D_STN_480
Dc.b sRsrc_Vid_CSC_G_D_STN_480
Dc.b sRsrc_Vid_CSC_G_S_TFT_480
Dc.b sRsrc_Vid_CSC_C_S_TFT_399y,sRsrc_Vid_CSC_C_S_TFT_480y ; Yeager
Dc.b sRsrc_Vid_CSC_G_D_STN_400y
Dc.b sRsrc_Vid_CSC_G_S_TFT_400y
Dc.b 0 ; Pad for word-alignment.
EndCSCML
Align 4
; In order to support family modes, we list all the members of each
; family in a table. These tables are below.
;
C_S_TFT_480_L Dc.w EndC_S_TFT_480-BeginC_S_TFT_480-1
BeginC_S_TFT_480
Dc.b sRsrc_Vid_CSC_C_S_TFT_480,sRsrc_Vid_CSC_C_S_TFT_399
EndC_S_TFT_480
C_S_TFT_480_AL Dc.w EndC_S_TFT_480a-BeginC_S_TFT_480a-1
BeginC_S_TFT_480a
Dc.b sRsrc_Vid_CSC_C_S_TFT_480a,sRsrc_Vid_CSC_C_S_TFT_399a
EndC_S_TFT_480a
C_S_TFT_480_BL Dc.w EndC_S_TFT_480b-BeginC_S_TFT_480b-1
BeginC_S_TFT_480b
Dc.b sRsrc_Vid_CSC_C_S_TFT_480b,sRsrc_Vid_CSC_C_S_TFT_399b
EndC_S_TFT_480b
C_S_TFT_480_CL Dc.w EndC_S_TFT_480c-BeginC_S_TFT_480c-1
BeginC_S_TFT_480c
Dc.b sRsrc_Vid_CSC_C_S_TFT_480c,sRsrc_Vid_CSC_C_S_TFT_399c
EndC_S_TFT_480c
C_S_TFT_480_DL Dc.w EndC_S_TFT_480d-BeginC_S_TFT_480d-1
BeginC_S_TFT_480d
Dc.b sRsrc_Vid_CSC_C_S_TFT_480d,sRsrc_Vid_CSC_C_S_TFT_399d
EndC_S_TFT_480d
Align 4
; The CSCProdTable is an array of configuration parameters indexed by
; bthe board sRsrc ID. This allows us to distinguish between the various
; CSC-based CPUs by product. At the moment, there are only Eschers
; and Blackbirds, and both of their tables are the same for now.
;
CSCProdTable
; Mem,Refresh,VRAM,<pad>
; -----------------
Dc.b $02,$02,$00,0 ; Escher Configuration.
Dc.b $02,$02,$05,0 ; Blackbird.
Dc.b $02,$02,$02,0 ; Yeager.
Align 4
; The CSCConfigTable is an array of configuration parameters indexed
; by panel ID. Within each set of panel parameters is a set of parameters
; that are indexed by the amount of VRAM available. These parameters
; are used in setting up the intial values of the Palette and selecting
; the right functional sRsrc per panel per VRAM configuration.
;
With CSCCnfgRec
CSCConfigTable
C_S_TFT_480_Tbl Dc.b $00,$FF,$00,$FF,$00,$FF,0,0 ; Mini-gamma table. [Color, TFT, Single-Drive, 640x480, Sharp]
Dc.b sRsrc_Vid_CSC_C_S_TFT_480,FourthVidMode ; 512K VRAM prefs.
Dc.b boxPowerBookDuo270c,0 ; BoxFlag.
Dc.w C_S_TFT_480_L-C_S_TFT_480_Tbl ; Offset to family modes.
Dcb.b CSCCnfgRecSize,sRsrc_CSC_NeverMatch ; ID=1 [Unused]
Dcb.b CSCCnfgRecSize,sRsrc_CSC_NeverMatch ; ID=2 [Unused]
Dcb.b CSCCnfgRecSize,sRsrc_CSC_NeverMatch ; ID=3 [Unused]
G_S_TFT_400_Tbl Dc.b $00,$FF,$00,$00,$00,$00,0,0 ; Mini-gamma table. [Gray, TFT, Single-Drive, 640x400, Hosiden]
Dc.b sRsrc_Vid_CSC_G_S_TFT_400,ThirdVidMode ; 512K VRAM prefs.
Dc.b boxPowerBookDuo270c,0 ; BoxFlag.
Dc.w 0 ; No family modes.
Dcb.b CSCCnfgRecSize,sRsrc_CSC_NeverMatch ; ID=5 [Unused]
G_D_STN_400_Tbl Dc.b $00,$FF,$00,$00,$00,$00,0,0 ; Mini-gamma table. [Gray, STN, Dual-Drive, 640x400, Sharp]
Dc.b sRsrc_Vid_CSC_G_D_STN_400,SecondVidMode ; 512K VRAM prefs.
Dc.b boxPowerBookDuo270c,0 ; BoxFlag.
Dc.w 0 ; No family modes.
Dcb.b CSCCnfgRecSize,sRsrc_CSC_NeverMatch ; ID=7, No-Connect. [No Panel Connected]
;---------------------------------------------------------------------
C_S_TFT_480_A Dc.b $00,$FF,$00,$FF,$00,$FF,0,0 ; Mini-gamma table. [Color, TFT, Single-Drive, 640x480, Sharp]
Dc.b sRsrc_Vid_CSC_C_S_TFT_480a,FourthVidMode ; 512K VRAM prefs.
Dc.b boxBlackbird,0 ; BoxFlag.
Dc.w C_S_TFT_480_AL-C_S_TFT_480_A ; Offset to family modes.
C_D_STN_480 Dc.b $00,$FF,$00,$FF,$00,$FF,0,0 ; Mini-gamma table. [Color, STN, Dual-Drive, 640x480, Sharp]
Dc.b sRsrc_Vid_CSC_C_D_STN_480,FourthVidMode ; 512K VRAM prefs.
Dc.b boxBlackbird,0 ; BoxFlag.
Dc.w 0 ; No family modes.
C_S_TFT_480_B Dc.b $00,$FF,$00,$FF,$00,$FF,0,0 ; Mini-gamma table. [Color, TFT, Single-Drive, 640x480, NEC]
Dc.b sRsrc_Vid_CSC_C_S_TFT_480b,FourthVidMode ; 512K VRAM prefs.
Dc.b boxBlackbird,0 ; BoxFlag.
Dc.w C_S_TFT_480_BL-C_S_TFT_480_B ; Offset to family modes.
C_S_TFT_480_C Dc.b $00,$FF,$00,$FF,$00,$FF,0,0 ; Mini-gamma table. [Color, TFT, Single-Drive, 640x480, Hosiden]
Dc.b sRsrc_Vid_CSC_C_S_TFT_480c,FourthVidMode ; 512K VRAM prefs.
Dc.b boxBlackbird,0 ; BoxFlag.
Dc.w C_S_TFT_480_CL-C_S_TFT_480_C ; Offset to family modes.
C_S_TFT_480_D Dc.b $00,$FF,$00,$FF,$00,$FF,0,0 ; Mini-gamma table. [Color, TFT, Single-Drive, 640x480, Toshiba]
Dc.b sRsrc_Vid_CSC_C_S_TFT_480d,FourthVidMode ; 512K VRAM prefs.
Dc.b boxBlackbird,0 ; BoxFlag.
Dc.w C_S_TFT_480_DL-C_S_TFT_480_D ; Offset to family modes.
G_D_STN_480_Tbl Dc.b $00,$FF,$00,$00,$00,$00,0,0 ; Mini-gamma table. [Gray, STN, Dual-Drive, 640x480, Sharp]
Dc.b sRsrc_Vid_CSC_G_D_STN_480,SecondVidMode ; 512K VRAM prefs.
Dc.b boxBlackbird,0 ; BoxFlag.
Dc.w 0 ; No family modes.
G_S_TFT_480_Tbl Dc.b $00,$FF,$00,$00,$00,$00,0,0 ; Mini-gamma table. [Gray, TFT, Single-Drive, 640x480, Hosiden]
Dc.b sRsrc_Vid_CSC_G_S_TFT_480,FourthVidMode ; 512K VRAM prefs.
Dc.b boxBlackbird,0 ; BoxFlag.
Dc.w 0 ; No family modes.
Dcb.b CSCCnfgRecSize,sRsrc_CSC_NeverMatch ; ID=7, No-Connect. [No Panel Connected]
;---------------------------------------------------------------------
C_S_TFT_480_Y Dc.b $00,$FF,$00,$FF,$00,$FF,0,0 ; Mini-gamma table. [Color, TFT, Single-Drive, 640x480, Sharp]
Dc.b sRsrc_Vid_CSC_C_S_TFT_480,FourthVidMode ; 512K VRAM prefs.
Dc.b boxYeagerC,0 ; BoxFlag.
Dc.w C_S_TFT_480_L-C_S_TFT_480_Y ; Offset to family modes.
Dcb.b CSCCnfgRecSize,sRsrc_CSC_NeverMatch ; ID=1 [Unused]
Dcb.b CSCCnfgRecSize,sRsrc_CSC_NeverMatch ; ID=2 [Unused]
Dcb.b CSCCnfgRecSize,sRsrc_CSC_NeverMatch ; ID=3 [Unused]
G_S_TFT_400_Y Dc.b $00,$FF,$00,$00,$00,$00,0,0 ; Mini-gamma table. [Gray, TFT, Single-Drive, 640x400, Hosiden-Yeager]
Dc.b sRsrc_Vid_CSC_G_S_TFT_400y,ThirdVidMode ; 512K VRAM prefs.
Dc.b boxYeagerG,0 ; BoxFlag.
Dc.w 0 ; No family modes.
Dcb.b CSCCnfgRecSize,sRsrc_CSC_NeverMatch ; ID=5 [Unused]
G_D_STN_400_Y Dc.b $00,$FF,$00,$00,$00,$00,0,0 ; Mini-gamma table. [Gray, STN, Dual-Drive, 640x400, Sharp-Yeager]
Dc.b sRsrc_Vid_CSC_G_D_STN_400y,SecondVidMode ; 512K VRAM prefs.
Dc.b boxYeagerFSTN,0 ; BoxFlag. <H45>
Dc.w 0 ; No family modes.
Dcb.b CSCCnfgRecSize,sRsrc_CSC_NeverMatch ; ID=7, No-Connect. [No Panel Connected]
Endwith
End
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