Checkpoint
This commit is contained in:
Lucas Scharenbroich
parent
027f9746ec
commit
1fe02e035c
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@ -0,0 +1,113 @@
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* Load Manager macros
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* by Dave Klimas
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;
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; Copyright Apple Computer, Inc. 1986, 1987
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; and Roger Wagner Publishing, Inc. 1988
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; All Rights Reserved
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;
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_LoaderInitialization MAC
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Tool $111
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<<<
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_LoaderStartUp MAC
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Tool $211
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<<<
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_LoaderShutDown MAC
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Tool $311
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<<<
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~LoaderVersion MAC
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PHA
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_LoaderVersion MAC
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Tool $411
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<<<
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_LoaderReset MAC
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Tool $511
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<<<
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~LoaderStatus MAC
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PHA
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_LoaderStatus MAC
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Tool $611
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<<<
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~InitialLoad MAC
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PHS 5
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PHWL ]1;]2
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PHW ]3
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_InitialLoad MAC
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Tool $911
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<<<
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~InitialLoad2 MAC
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PHS 5
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PHWL ]1;]2
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PxW ]3;]4
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_InitialLoad2 MAC
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Tool $2011
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<<<
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~Restart MAC
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PHS 5
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PHW ]1
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_Restart MAC
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Tool $A11
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<<<
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~LoadSegNum MAC
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PHS 2
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PxW ]1;]2;]3
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_LoadSegNum MAC
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Tool $B11
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<<<
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~UnloadSegNum MAC
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PxW ]1;]2;]3
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_UnloadSegNum MAC
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Tool $C11
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<<<
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~LoadSegName MAC
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PHS 4
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PHW ]1
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PxL ]2;]3
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_LoadSegName MAC
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Tool $D11
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<<<
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~UnloadSeg MAC
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PHS 3
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PHL ]1
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_UnloadSeg MAC
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Tool $E11
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<<<
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~GetLoadSegInfo MAC
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PxW ]1;]2;]3
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PHL ]4
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_GetLoadSegInfo MAC
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Tool $F11
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<<<
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~GetUserID MAC
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P1SL ]1
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_GetUserID MAC
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Tool $1011
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<<<
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~GetUserID2 MAC
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P1SL ]1
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_GetUserID2 MAC
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Tool $2111
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<<<
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~LGetPathname MAC
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PHS 2
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PxW ]1;]2
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_LGetPathname MAC
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Tool $1111
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<<<
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~LGetPathname2 MAC
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PHS 2
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PxW ]1;]2
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_LGetPathname2 MAC
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Tool $2211
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<<<
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~UserShutDown MAC
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PHA
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PxW ]1;]2
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_UserShutDown MAC
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Tool $1211
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<<<
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~RenamePathname MAC
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PxL ]1;]2
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_RenamePathname MAC
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Tool $1311
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<<<
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@ -339,6 +339,11 @@ Tool MAC
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JSL $E10000 ; go to dispatcher
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JSL $E10000 ; go to dispatcher
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<<<
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<<<
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UserTool MAC
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LDX #]1 ; load tool call #
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JSL $E10008 ; go to dispatcher
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<<<
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**************************************************
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**************************************************
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* Auto-menu item macros *
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* Auto-menu item macros *
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* This is one alternative for defining a menu *
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* This is one alternative for defining a menu *
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41
src/Core.s
41
src/Core.s
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@ -1,4 +1,5 @@
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use Util.Macs.s
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use Util.Macs.s
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use Load.Macs.s
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use Locator.Macs.s
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use Locator.Macs.s
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use Mem.Macs.s
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use Mem.Macs.s
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use Misc.Macs.s
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use Misc.Macs.s
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@ -39,6 +40,12 @@ EngineStartUp ENT
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plb
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plb
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jsr ToolStartUp ; Start up the toolbox tools we rely on
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jsr ToolStartUp ; Start up the toolbox tools we rely on
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jsr _CoreStartUp
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plb
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rtl
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_CoreStartUp
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jsr SoundStartUp ; Start up any sound/music tools
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jsr SoundStartUp ; Start up any sound/music tools
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jsr IntStartUp ; Enable certain iterrupts
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jsr IntStartUp ; Enable certain iterrupts
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@ -51,22 +58,24 @@ EngineStartUp ENT
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jsr InitTiles ; Initialize the tile subsystem
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jsr InitTiles ; Initialize the tile subsystem
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jsr InitTimers ; Initialize the timer subsystem
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jsr InitTimers ; Initialize the timer subsystem
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rts
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plb
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rtl
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EngineShutDown ENT
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EngineShutDown ENT
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phb
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phb
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phk
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phk
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plb
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plb
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jsr IntShutDown
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jsr _CoreShutDown
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jsr SoundShutDown
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jsr ToolShutDown
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jsr ToolShutDown
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plb
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plb
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rtl
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rtl
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_CoreShutDown
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jsr IntShutDown
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jsr SoundShutDown
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rts
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ToolStartUp
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ToolStartUp
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_TLStartUp ; normal tool initialization
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_TLStartUp ; normal tool initialization
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pha
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pha
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@ -274,9 +283,10 @@ EngineReset
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; 6. Game Boy Advanced : 30 x 20 240 x 160 (19,200 bytes ( 60.0%))
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; 6. Game Boy Advanced : 30 x 20 240 x 160 (19,200 bytes ( 60.0%))
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; 7. Ancient Land of Y's : 36 x 16 288 x 128 (18,432 bytes ( 57.6%))
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; 7. Ancient Land of Y's : 36 x 16 288 x 128 (18,432 bytes ( 57.6%))
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; 8. Game Boy Color : 20 x 18 160 x 144 (11,520 bytes ( 36.0%))
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; 8. Game Boy Color : 20 x 18 160 x 144 (11,520 bytes ( 36.0%))
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;
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; 9. Agony (Amiga) : 36 x 24 288 x 192 (27,648 bytes ( 86.4%))
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;
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; X = mode number OR width in pixels (must be multiple of 2)
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; X = mode number OR width in pixels (must be multiple of 2)
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; Y = hwight in pixels (if X > 8)
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; Y = height in pixels (if X > 8)
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ScreenModeWidth dw 320,272,256,256,280,256,240,288,160,320
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ScreenModeWidth dw 320,272,256,256,280,256,240,288,160,320
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ScreenModeHeight dw 200,192,200,176,160,160,160,128,144,1
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ScreenModeHeight dw 200,192,200,176,160,160,160,128,144,1
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@ -285,7 +295,11 @@ SetScreenMode ENT
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phb
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phb
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phk
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phk
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plb
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plb
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jsr _SetScreenMode
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plb
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rtl
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_SetScreenMode
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cpx #9
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cpx #9
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bcs :direct ; if x > 8, then assume X and Y are the dimensions
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bcs :direct ; if x > 8, then assume X and Y are the dimensions
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@ -326,11 +340,10 @@ SetScreenMode ENT
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plx
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plx
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jsr SetScreenRect
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jsr SetScreenRect
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jsr FillScreen
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jmp FillScreen ; tail return
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:exit
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:exit
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plb
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rts
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rtl
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WaitForKey sep #$20
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WaitForKey sep #$20
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stal KBD_STROBE_REG ; clear the strobe
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stal KBD_STROBE_REG ; clear the strobe
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@ -348,6 +361,10 @@ ClearKbdStrobe sep #$20
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; Read the keyboard and paddle controls and return in a game-controller-like format
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; Read the keyboard and paddle controls and return in a game-controller-like format
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LastKey db 0
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LastKey db 0
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ReadControl ENT
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ReadControl ENT
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jsr _ReadControl
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rtl
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_ReadControl
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pea $0000 ; low byte = key code, high byte = %------AB
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pea $0000 ; low byte = key code, high byte = %------AB
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sep #$20
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sep #$20
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@ -391,7 +408,7 @@ ReadControl ENT
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:KbdDown
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:KbdDown
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rep #$20
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rep #$20
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pla
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pla
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rtl
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rts
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put Memory.s
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put Memory.s
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put Graphics.s
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put Graphics.s
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@ -78,8 +78,9 @@ BG1TileMapWidth equ 82
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BG1TileMapHeight equ 84
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BG1TileMapHeight equ 84
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BG1TileMapPtr equ 86
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BG1TileMapPtr equ 86
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SCBArrayPtr equ 90 ; USed for palette binding
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SCBArrayPtr equ 90 ; Used for palette binding
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Next equ 94
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SpriteBanks equ 94 ; Bank bytes for the sprite data and sprite mask
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Next equ 96
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BankLoad equ 128
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BankLoad equ 128
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18
src/GTE.s
18
src/GTE.s
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@ -74,3 +74,21 @@ AllocBank EXT
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ScreenAddr EXT
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ScreenAddr EXT
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OneSecondCounter EXT
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OneSecondCounter EXT
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BlitBuff EXT
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BlitBuff EXT
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; Helper function to load the GTE User Toolset
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GTEInstall
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php
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; ~InitialLoad userId;localToolPath;#0
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pea $8000 ; User tool
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pea $00A5 ; Tool 165
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PushLong toolPtr
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_SetTSPtr
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plp
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rtl
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; Look for the tool set in the System Tools folder and then next to the application
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sysToolPath strl '*:System:Tools:ToolGTE'
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localToolPath strl '9:ToolGTE'
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toolPtr adrl 0
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55
src/Sprite.s
55
src/Sprite.s
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@ -1,4 +1,4 @@
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; Functions for sprie handling. Mostly maintains the sprite list and provides
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; Functions for sprite handling. Mostly maintains the sprite list and provides
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; utility functions to calculate sprite/tile intersections
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; utility functions to calculate sprite/tile intersections
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;
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;
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; The sprite plane actually covers two banks so that more than 32K can be used as a virtual
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; The sprite plane actually covers two banks so that more than 32K can be used as a virtual
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@ -31,6 +31,8 @@ InitSprites
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dex
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dex
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bpl :loop3
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bpl :loop3
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; Precalculate some bank values
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jsr _CacheSpriteBanks
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rts
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rts
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; Run through the list of tile store offsets that this sprite was last drawn into and mark
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; Run through the list of tile store offsets that this sprite was last drawn into and mark
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@ -116,23 +118,27 @@ _ClearSpriteFromTileStore
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; any sprite that needs to be re-drawn has been marked as dirty.
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; any sprite that needs to be re-drawn has been marked as dirty.
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;
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;
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; In the first phase, we run through the list of dirty sprites and erase them from their
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; In the first phase, we run through the list of dirty sprites and erase them from their
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; OLD_VBUFF_ADDR. This clears the sprite plane buffers. We also interate through the
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; OLD_VBUFF_ADDR. This clears the sprite plane buffers. We also iterate through the
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; TILE_STORE_ADDR_X array and mark all of the tile store location that this sprite had occupied
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; TILE_STORE_ADDR_X array and mark all of the tile store location that this sprite had occupied
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; as dirty, as well as removing this sprite from the TS_SPRITE_FLAG bitfield.
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; as dirty, as well as removing this sprite from the TS_SPRITE_FLAG bitfield.
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;
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;
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; A final aspect is that any of the sprites idicated in the TS_SPRITE_FLAG are marked to be
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; A final aspect is that any of the sprites indicated in the TS_SPRITE_FLAG are marked to be
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; drawn in the next phase (since a portion of their content may have been erased if they overlap)
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; drawn in the next phase (since a portion of their content may have been erased if they overlap)
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;
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;
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; In the second phase, the sprite is re-drawn into the sprite plane buffers and the appropriate
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; In the second phase, the sprite is re-drawn into the sprite plane buffers and the appropriate
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; Tile Store locations are marked as dirty
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; Tile Store locations are marked as dirty. It is important to recognize that the sprites themselves
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;
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; can be marked dirty, and the underlying tiles in the tile store are independently marked dirty.
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;
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forceSpriteFlag ds 2
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forceSpriteFlag ds 2
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_RenderSprites
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_RenderSprites
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; First step is to look at the StartX and StartY values. If the offsets have changed from the
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; First step is to look at the StartX and StartY values. If the offsets have changed from the
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; last time that the frame was redered, then we need to mark all of the sprites as dirty so that
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; last time that the frame was rendered, then we need to mark all of the sprites as dirty so that
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; the tiles on which they were located at the previous frame will be refreshed
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; the tiles on which they were located at the previous frame will be refreshed
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;
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; OPTIMIZATION NOTE: Shoud check that the sprite actually chanegs position. If the screen scrolles
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; by +X, but the sprite moves by -X (so it's relative position is unchanged), then
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; it does NOT need to be marked as dirty.
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stz forceSpriteFlag
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stz forceSpriteFlag
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lda StartX
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lda StartX
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@ -169,7 +175,7 @@ _RenderSprites
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; Second step is to scan the list of sprites. A sprite is either clean or dirty. If it's dirty,
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; Second step is to scan the list of sprites. A sprite is either clean or dirty. If it's dirty,
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; then its position had changed, so we need to add tiles to the dirty queue to make sure the
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; then its position had changed, so we need to add tiles to the dirty queue to make sure the
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; playfield gets update. If it's clean, we can skip everything.
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; playfield gets updated. If it's clean, we can skip everything.
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ldy #0
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ldy #0
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:loop lda _Sprites+SPRITE_STATUS,y ; If the status is zero, that's the sentinel value
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:loop lda _Sprites+SPRITE_STATUS,y ; If the status is zero, that's the sentinel value
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@ -371,7 +377,7 @@ draw_8x16h
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adc #{8*SPRITE_PLANE_SPAN}
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adc #{8*SPRITE_PLANE_SPAN}
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tax
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tax
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tya
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tya
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adc #{128*32} ; 32 tiles to the next verical one, each tile is 128 bytes
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adc #{128*32} ; 32 tiles to the next vertical one, each tile is 128 bytes
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tay
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tay
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jmp _DrawTile8x8
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jmp _DrawTile8x8
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@ -586,8 +592,8 @@ _DrawTile8x8
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]line equ 0
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]line equ 0
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lup 8
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lup 8
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lda: tiledata+32+{]line*4},y
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lda: tiledata+32+{]line*4},y
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andl spritemask+{]line*256},x
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andl spritemask+{]line*SPRITE_PLANE_SPAN},x
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stal spritemask+{]line*256},x
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stal spritemask+{]line*SPRITE_PLANE_SPAN},x
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ldal spritedata+{]line*SPRITE_PLANE_SPAN},x
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ldal spritedata+{]line*SPRITE_PLANE_SPAN},x
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and: tiledata+32+{]line*4},y
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and: tiledata+32+{]line*4},y
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@ -619,8 +625,8 @@ _DrawTile16x16
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]line equ 0
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]line equ 0
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lup 8
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lup 8
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lda: tiledata+32+{]line*4},y
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lda: tiledata+32+{]line*4},y
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andl spritemask+{]line*256},x
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andl spritemask+{]line*SPRITE_PLANE_SPAN},x
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stal spritemask+{]line*256},x
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stal spritemask+{]line*SPRITE_PLANE_SPAN},x
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ldal spritedata+{]line*SPRITE_PLANE_SPAN},x
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ldal spritedata+{]line*SPRITE_PLANE_SPAN},x
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and: tiledata+32+{]line*4},y
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and: tiledata+32+{]line*4},y
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@ -663,8 +669,8 @@ SPRITE_ROW_STRIDE equ 8*SPRITE_PLANE_SPAN
|
||||||
]line equ 0
|
]line equ 0
|
||||||
lup 8
|
lup 8
|
||||||
lda: tiledata+TILE_ROW_STRIDE+32+{]line*4},y
|
lda: tiledata+TILE_ROW_STRIDE+32+{]line*4},y
|
||||||
andl spritemask+SPRITE_ROW_STRIDE+{]line*256},x
|
andl spritemask+SPRITE_ROW_STRIDE+{]line*SPRITE_PLANE_SPAN},x
|
||||||
stal spritemask+SPRITE_ROW_STRIDE+{]line*256},x
|
stal spritemask+SPRITE_ROW_STRIDE+{]line*SPRITE_PLANE_SPAN},x
|
||||||
|
|
||||||
ldal spritedata+SPRITE_ROW_STRIDE+{]line*SPRITE_PLANE_SPAN},x
|
ldal spritedata+SPRITE_ROW_STRIDE+{]line*SPRITE_PLANE_SPAN},x
|
||||||
and: tiledata+TILE_ROW_STRIDE+32+{]line*4},y
|
and: tiledata+TILE_ROW_STRIDE+32+{]line*4},y
|
||||||
|
|
@ -717,8 +723,8 @@ _DrawTile8x8V
|
||||||
]line equ 0
|
]line equ 0
|
||||||
lup 8
|
lup 8
|
||||||
lda: tiledata+32+{{7-]line}*4},y
|
lda: tiledata+32+{{7-]line}*4},y
|
||||||
andl spritemask+{]line*256},x
|
andl spritemask+{]line*SPRITE_PLANE_SPAN},x
|
||||||
stal spritemask+{]line*256},x
|
stal spritemask+{]line*SPRITE_PLANE_SPAN},x
|
||||||
|
|
||||||
ldal spritedata+{]line*SPRITE_PLANE_SPAN},x
|
ldal spritedata+{]line*SPRITE_PLANE_SPAN},x
|
||||||
and: tiledata+32+{{7-]line}*4},y
|
and: tiledata+32+{{7-]line}*4},y
|
||||||
|
|
@ -744,13 +750,20 @@ _DrawTile8x8V
|
||||||
; resgion to all $FFFF
|
; resgion to all $FFFF
|
||||||
;
|
;
|
||||||
; X = address is sprite plane -- erases an 8x8 region
|
; X = address is sprite plane -- erases an 8x8 region
|
||||||
|
_CacheSpriteBanks
|
||||||
|
lda #>spritemask
|
||||||
|
and #$FF00
|
||||||
|
ora #^spritedata
|
||||||
|
sta SpriteBanks
|
||||||
|
rts
|
||||||
|
|
||||||
SPRITE_PLANE_SPAN equ 256
|
SPRITE_PLANE_SPAN equ 256
|
||||||
|
|
||||||
_EraseTileSprite
|
_EraseTileSprite
|
||||||
phb ; Save the bank to switch to the sprite plane
|
phb ; Save the bank to switch to the sprite plane
|
||||||
|
|
||||||
pea #^spritedata
|
pei SpriteBanks
|
||||||
plb
|
plb ; pop the data bank (low byte)
|
||||||
|
|
||||||
lda #0
|
lda #0
|
||||||
sta: {0*SPRITE_PLANE_SPAN}+0,x
|
sta: {0*SPRITE_PLANE_SPAN}+0,x
|
||||||
|
|
@ -770,8 +783,7 @@ _EraseTileSprite
|
||||||
sta: {7*SPRITE_PLANE_SPAN}+0,x
|
sta: {7*SPRITE_PLANE_SPAN}+0,x
|
||||||
sta: {7*SPRITE_PLANE_SPAN}+2,x
|
sta: {7*SPRITE_PLANE_SPAN}+2,x
|
||||||
|
|
||||||
pea #^spritemask
|
plb ; pop the mask bank (high byte)
|
||||||
plb
|
|
||||||
|
|
||||||
lda #$FFFF
|
lda #$FFFF
|
||||||
sta: {0*SPRITE_PLANE_SPAN}+0,x
|
sta: {0*SPRITE_PLANE_SPAN}+0,x
|
||||||
|
|
@ -791,7 +803,6 @@ _EraseTileSprite
|
||||||
sta: {7*SPRITE_PLANE_SPAN}+0,x
|
sta: {7*SPRITE_PLANE_SPAN}+0,x
|
||||||
sta: {7*SPRITE_PLANE_SPAN}+2,x
|
sta: {7*SPRITE_PLANE_SPAN}+2,x
|
||||||
|
|
||||||
pla
|
|
||||||
plb
|
plb
|
||||||
rts
|
rts
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,131 @@
|
||||||
|
; Toolbox wrapper for the GTE library. Implemented as a user tool
|
||||||
|
;
|
||||||
|
; Ref: Toolbox Reference, Volume 2, Appendix A
|
||||||
|
; Ref: IIgs Tech Note #73
|
||||||
|
|
||||||
|
ToStrip equ $E10184
|
||||||
|
|
||||||
|
_CallTable
|
||||||
|
dw {_CTEnd-_CallTable}/4,0
|
||||||
|
adrl _TSBootInit-1
|
||||||
|
adrl _TSStartUp-1
|
||||||
|
adrl _TSShutDown-1
|
||||||
|
adrl _TSVersion-1
|
||||||
|
adrl _TSReset-1
|
||||||
|
adrl _TSStatus-1
|
||||||
|
adrl _TSReserved-1
|
||||||
|
adrl _TSReserved-1
|
||||||
|
|
||||||
|
adrl _TSSetScreenMode
|
||||||
|
_CTEnd
|
||||||
|
|
||||||
|
; Do nothing when the tool set is installed
|
||||||
|
_TSBootInit
|
||||||
|
lda #0
|
||||||
|
clc
|
||||||
|
rtl
|
||||||
|
|
||||||
|
; Call the regular GTE startup function after setting the Work Area Point (WAP). The caller much provide
|
||||||
|
; one page of Bank 0 memory for the tool set's private use
|
||||||
|
;
|
||||||
|
; X =
|
||||||
|
_TSStartUp
|
||||||
|
:zpToUse equ 7
|
||||||
|
|
||||||
|
pea #$8000
|
||||||
|
txa
|
||||||
|
and #$00FF
|
||||||
|
pha
|
||||||
|
|
||||||
|
pea $0000
|
||||||
|
lda :zpToUse+6,s
|
||||||
|
pha
|
||||||
|
_SetWAP
|
||||||
|
|
||||||
|
jsr _CoreStartUp
|
||||||
|
|
||||||
|
_TSShutDown
|
||||||
|
cmp #0 ; Acc is low word of the WAP (direct page)
|
||||||
|
beq :inactive
|
||||||
|
|
||||||
|
phd
|
||||||
|
pha
|
||||||
|
pld ; Set the direct page for the toolset
|
||||||
|
|
||||||
|
phx ; Preserve the X register
|
||||||
|
jsr _CoreShutDown ; Shut down GTE
|
||||||
|
pla
|
||||||
|
|
||||||
|
pea $8000
|
||||||
|
and #$00FF
|
||||||
|
pha
|
||||||
|
pea $0000 ; Set WAP to null
|
||||||
|
pea $0000
|
||||||
|
_SetWAP
|
||||||
|
|
||||||
|
pld ; Restore the direct page
|
||||||
|
|
||||||
|
:inactive
|
||||||
|
lda #0
|
||||||
|
clc
|
||||||
|
rtl
|
||||||
|
|
||||||
|
_TSVersion
|
||||||
|
lda #$0100 ; Version 1
|
||||||
|
sta 7,s
|
||||||
|
|
||||||
|
lda #0
|
||||||
|
clc
|
||||||
|
rtl
|
||||||
|
|
||||||
|
_TSReset
|
||||||
|
lda #0
|
||||||
|
clc
|
||||||
|
rtl
|
||||||
|
|
||||||
|
; Check the WAP values in the A, Y registers
|
||||||
|
_TSStatus
|
||||||
|
sta 1,s
|
||||||
|
tya
|
||||||
|
ora 1,s
|
||||||
|
sta 1,s ; 0 if WAP is null, non-zero if WAP is set
|
||||||
|
|
||||||
|
lda #0
|
||||||
|
clc
|
||||||
|
rtl
|
||||||
|
|
||||||
|
_TSReserved
|
||||||
|
txa
|
||||||
|
xba
|
||||||
|
ora #$00FF ; Put error code $FF in the accumulator
|
||||||
|
sec
|
||||||
|
rtl
|
||||||
|
|
||||||
|
_TSSetScreenMode
|
||||||
|
phd ; Preserve the direct page
|
||||||
|
pha
|
||||||
|
pld
|
||||||
|
|
||||||
|
lda 9,s
|
||||||
|
tay
|
||||||
|
lda 9,s
|
||||||
|
tax
|
||||||
|
jsr _SetScreenMode
|
||||||
|
pld
|
||||||
|
|
||||||
|
ldx #0 ; No error
|
||||||
|
ldy #4 ; Remove the 4 input bytes
|
||||||
|
jml ToStrip
|
||||||
|
|
||||||
|
_TSReadControl
|
||||||
|
phd ; Preserve the direct page
|
||||||
|
pha
|
||||||
|
pld
|
||||||
|
|
||||||
|
jsr _ReadControl
|
||||||
|
sta 9,s
|
||||||
|
|
||||||
|
pld
|
||||||
|
ldx #0 ; No error
|
||||||
|
ldy #0 ; Remove zero input bytes
|
||||||
|
jml ToStrip
|
||||||
|
|
@ -526,11 +526,11 @@ BuildBank
|
||||||
; to cover the full screen vertical scrolling.
|
; to cover the full screen vertical scrolling.
|
||||||
;
|
;
|
||||||
; The 'base' location is always assumed to be on a 4kb ($1000) boundary. We make sure that
|
; The 'base' location is always assumed to be on a 4kb ($1000) boundary. We make sure that
|
||||||
; the code is assembled on a page boundary to help will alignment
|
; the code is assembled on a page boundary to help with alignment
|
||||||
ds \,$00 ; pad to the next page boundary
|
ds \,$00 ; pad to the next page boundary
|
||||||
base
|
base
|
||||||
entry_1 ldx #0000 ; Used for LDA 00,x addressing
|
entry_1 ldx #0000 ; Used for LDA 00,x addressing (Dynamic Tiles)
|
||||||
entry_2 ldy #0000 ; Used for LDA (00),y addressing
|
entry_2 ldy #0000 ; Used for LDA (00),y addressing (Second Layer; BG1)
|
||||||
entry_3 lda #0000 ; Sets screen address (right edge)
|
entry_3 lda #0000 ; Sets screen address (right edge)
|
||||||
tcs
|
tcs
|
||||||
|
|
||||||
|
|
@ -691,22 +691,17 @@ epilogue_1 tsc
|
||||||
; Standard Two-level Mix (23 bytes)
|
; Standard Two-level Mix (23 bytes)
|
||||||
;
|
;
|
||||||
; Optimal = 18 cycles (LDA/AND/ORA/PHA/JMP)
|
; Optimal = 18 cycles (LDA/AND/ORA/PHA/JMP)
|
||||||
; 16-bit write = 21 cycles
|
; 16-bit write = 20 cycles
|
||||||
; 8-bit low = 30 cycles
|
; 8-bit low = 28 cycles
|
||||||
; 8-bit high = 29 cycles
|
; 8-bit high = 27 cycles
|
||||||
;
|
;
|
||||||
; start lda (00),y ; 6
|
; start lda (00),y ; 6
|
||||||
; and #MASK ; 3
|
; and #MASK ; 3
|
||||||
; ora #DATA ; 3 = 12 cycles to load the data
|
; ora #DATA ; 3 = 12 cycles to load the data
|
||||||
; bcs alt_exit ; 2/3
|
; bcs alt_exit ; 2/3
|
||||||
; pha ; 4
|
; pha ; 4
|
||||||
; out brl next ; 4 Fast-path completes in 5 additional cycles
|
; out jmp next ; 3 Fast-path completes in 5 additional cycles
|
||||||
;
|
; alt_exit jmp jmp_rtn ; 3
|
||||||
; alt_exit bvs r_edge ; 2/3
|
|
||||||
; clc ; 2
|
|
||||||
; brl l_jmp_rtn ; 3
|
|
||||||
; r_edge rep #$41
|
|
||||||
; brl r_jmp_rtn ; 3
|
|
||||||
;
|
;
|
||||||
;
|
;
|
||||||
; For dynamic masked tiles, we re-write bytes 2 - 8 as this, which mostly
|
; For dynamic masked tiles, we re-write bytes 2 - 8 as this, which mostly
|
||||||
|
|
@ -716,7 +711,6 @@ epilogue_1 tsc
|
||||||
; start lda (00),y ; 6
|
; start lda (00),y ; 6
|
||||||
; and $80,x ; 5
|
; and $80,x ; 5
|
||||||
; ora $00,x ; 5 = 16 cycles to load the data
|
; ora $00,x ; 5 = 16 cycles to load the data
|
||||||
; bcc *+4 ;
|
|
||||||
; bcs alt_exit ; 2/3
|
; bcs alt_exit ; 2/3
|
||||||
; pha
|
; pha
|
||||||
; ...
|
; ...
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue