mirror of
https://gitlab.com/camelot/kickc.git
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541 lines
18 KiB
Plaintext
541 lines
18 KiB
Plaintext
Resolved forward reference irq to __interrupt(hardware_clobber) void irq()
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Inlined call vicSelectGfxBank::$0 = call toDd00(vicSelectGfxBank::gfx)
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CONTROL FLOW GRAPH SSA
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void main()
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main: scope:[main] from __start
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asm { sei }
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*PROCPORT_DDR = PROCPORT_DDR_MEMORY_MASK
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*PROCPORT = PROCPORT_RAM_IO
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*((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) = CIA_INTERRUPT_CLEAR_ALL
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*VICII_CONTROL1 = *VICII_CONTROL1 | $80
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*RASTER = 0
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*IRQ_ENABLE = IRQ_RASTER
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*HARDWARE_IRQ = &irq
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asm { cli }
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to:main::@1
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main::@1: scope:[main] from main main::@2
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if(true) goto main::@2
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to:main::@return
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main::@2: scope:[main] from main::@1
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*BORDER_COLOR = ++ *BORDER_COLOR
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to:main::@1
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main::@return: scope:[main] from main::@1
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return
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to:@return
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__interrupt(hardware_clobber) void irq()
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irq: scope:[irq] from
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call do_irq
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to:irq::@1
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irq::@1: scope:[irq] from irq
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to:irq::@return
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irq::@return: scope:[irq] from irq::@1
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return
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to:@return
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void do_irq()
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do_irq: scope:[do_irq] from irq
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*BG_COLOR = WHITE
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*BG_COLOR = BLACK
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*IRQ_STATUS = IRQ_RASTER
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to:do_irq::@return
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do_irq::@return: scope:[do_irq] from do_irq
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return
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to:@return
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void __start()
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__start: scope:[__start] from
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call main
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to:__start::@1
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__start::@1: scope:[__start] from __start
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to:__start::@return
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__start::@return: scope:[__start] from __start::@1
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return
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to:@return
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SYMBOL TABLE SSA
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__constant char * const BG_COLOR = (char *)$d021
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__constant const char BLACK = 0
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__constant char * const BORDER_COLOR = (char *)$d020
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__constant struct MOS6526_CIA * const CIA1 = (struct MOS6526_CIA *)$dc00
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__constant const char CIA_INTERRUPT_CLEAR_ALL = $7f
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__constant void (** const HARDWARE_IRQ)() = (void (**)())$fffe
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__constant char * const IRQ_ENABLE = (char *)$d01a
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__constant const char IRQ_RASTER = 1
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__constant char * const IRQ_STATUS = (char *)$d019
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__constant char OFFSET_STRUCT_MOS6526_CIA_INTERRUPT = $d
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__constant char * const PROCPORT = (char *)1
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__constant char * const PROCPORT_DDR = (char *)0
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__constant const char PROCPORT_DDR_MEMORY_MASK = 7
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__constant const char PROCPORT_RAM_IO = 5
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__constant char * const RASTER = (char *)$d012
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__constant char * const VICII_CONTROL1 = (char *)$d011
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__constant const char WHITE = 1
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void __start()
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void do_irq()
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__interrupt(hardware_clobber) void irq()
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void main()
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Adding number conversion cast (unumber) $80 in *VICII_CONTROL1 = *VICII_CONTROL1 | $80
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Adding number conversion cast (unumber) 0 in *RASTER = 0
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Successful SSA optimization PassNAddNumberTypeConversions
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Inlining cast *RASTER = (unumber)0
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Successful SSA optimization Pass2InlineCast
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Simplifying constant pointer cast (char *) 53266
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Simplifying constant pointer cast (char *) 53280
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Simplifying constant pointer cast (char *) 53281
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Simplifying constant pointer cast (char *) 53265
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Simplifying constant pointer cast (char *) 53273
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Simplifying constant pointer cast (char *) 53274
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Simplifying constant pointer cast (char *) 0
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Simplifying constant pointer cast (char *) 1
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Simplifying constant pointer cast (struct MOS6526_CIA *) 56320
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Simplifying constant pointer cast (void (**)()) 65534
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Simplifying constant integer cast $80
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Simplifying constant integer cast 0
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (char) $80
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Finalized unsigned number type (char) 0
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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if() condition always true - replacing block destination [9] if(true) goto main::@2
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Successful SSA optimization Pass2ConstantIfs
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Removing unused block main::@return
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Successful SSA optimization Pass2EliminateUnusedBlocks
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Removing unused procedure __start
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Removing unused procedure block __start
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Removing unused procedure block __start::@1
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Removing unused procedure block __start::@return
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Successful SSA optimization PassNEliminateEmptyStart
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Adding NOP phi() at start of irq
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Adding NOP phi() at start of irq::@1
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Adding NOP phi() at start of main::@1
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CALL GRAPH
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Calls in [irq] to do_irq:1
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Created 0 initial phi equivalence classes
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Coalesced down to 0 phi equivalence classes
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Culled Empty Block label irq::@1
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Culled Empty Block label main::@1
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Renumbering block main::@2 to main::@1
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Adding NOP phi() at start of irq
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FINAL CONTROL FLOW GRAPH
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__interrupt(hardware_clobber) void irq()
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irq: scope:[irq] from
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[0] phi()
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[1] call do_irq
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to:irq::@return
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irq::@return: scope:[irq] from irq
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[2] return
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to:@return
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void main()
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main: scope:[main] from
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asm { sei }
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[4] *PROCPORT_DDR = PROCPORT_DDR_MEMORY_MASK
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[5] *PROCPORT = PROCPORT_RAM_IO
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[6] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) = CIA_INTERRUPT_CLEAR_ALL
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[7] *VICII_CONTROL1 = *VICII_CONTROL1 | $80
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[8] *RASTER = 0
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[9] *IRQ_ENABLE = IRQ_RASTER
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[10] *HARDWARE_IRQ = &irq
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asm { cli }
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to:main::@1
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main::@1: scope:[main] from main main::@1
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[12] *BORDER_COLOR = ++ *BORDER_COLOR
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to:main::@1
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void do_irq()
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do_irq: scope:[do_irq] from irq
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[13] *BG_COLOR = WHITE
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[14] *BG_COLOR = BLACK
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[15] *IRQ_STATUS = IRQ_RASTER
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to:do_irq::@return
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do_irq::@return: scope:[do_irq] from do_irq
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[16] return
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to:@return
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VARIABLE REGISTER WEIGHTS
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void do_irq()
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__interrupt(hardware_clobber) void irq()
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void main()
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Initial phi equivalence classes
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Complete equivalence classes
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REGISTER UPLIFT POTENTIAL REGISTERS
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Statement [2] return [ ] ( [ ] { } ) always clobbers reg byte a reg byte x reg byte y
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Statement [4] *PROCPORT_DDR = PROCPORT_DDR_MEMORY_MASK [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [5] *PROCPORT = PROCPORT_RAM_IO [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [6] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) = CIA_INTERRUPT_CLEAR_ALL [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [7] *VICII_CONTROL1 = *VICII_CONTROL1 | $80 [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [8] *RASTER = 0 [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [9] *IRQ_ENABLE = IRQ_RASTER [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [10] *HARDWARE_IRQ = &irq [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [13] *BG_COLOR = WHITE [ ] ( do_irq:1 [ ] { } ) always clobbers reg byte a
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Statement [14] *BG_COLOR = BLACK [ ] ( do_irq:1 [ ] { } ) always clobbers reg byte a
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Statement [15] *IRQ_STATUS = IRQ_RASTER [ ] ( do_irq:1 [ ] { } ) always clobbers reg byte a
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REGISTER UPLIFT SCOPES
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Uplift Scope [MOS6526_CIA]
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Uplift Scope [MOS6569_VICII]
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Uplift Scope [MOS6581_SID]
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Uplift Scope [main]
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Uplift Scope [irq]
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Uplift Scope [do_irq]
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Uplift Scope []
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Uplifting [MOS6526_CIA] best 423 combination
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Uplifting [MOS6569_VICII] best 423 combination
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Uplifting [MOS6581_SID] best 423 combination
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Uplifting [main] best 423 combination
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Uplifting [irq] best 423 combination
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Uplifting [do_irq] best 423 combination
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Uplifting [] best 423 combination
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Interrupt procedure irq clobbers AnzPS
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ASSEMBLER BEFORE OPTIMIZATION
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// File Comments
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// A minimal working raster hardware IRQ with clobber-based register savings
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/// @file
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/// Commodore 64 Registers and Constants
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/// @file
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/// The MOS 6526 Complex Interface Adapter (CIA)
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///
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/// http://archive.6502.org/datasheets/mos_6526_cia_recreated.pdf
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// Upstart
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// Commodore 64 PRG executable file
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.file [name="irq-hardware-clobber-jsr.prg", type="prg", segments="Program"]
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.segmentdef Program [segments="Basic, Code, Data"]
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.segmentdef Basic [start=$0801]
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.segmentdef Code [start=$80d]
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.segmentdef Data [startAfter="Code"]
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.segment Basic
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:BasicUpstart(main)
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// Global Constants & labels
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/// Value that disables all CIA interrupts when stored to the CIA Interrupt registers
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.const CIA_INTERRUPT_CLEAR_ALL = $7f
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/// VICII IRQ Status/Enable Raster
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// @see #IRQ_ENABLE #IRQ_STATUS
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/// 0 | RST| Reaching a certain raster line. The line is specified by writing
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/// | | to register 0xd012 and bit 7 of $d011 and internally stored by
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/// | | the VIC for the raster compare. The test for reaching the
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/// | | interrupt raster line is done in cycle 0 of every line (for line
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/// | | 0, in cycle 1).
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.const IRQ_RASTER = 1
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/// Mask for PROCESSOR_PORT_DDR which allows only memory configuration to be written
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.const PROCPORT_DDR_MEMORY_MASK = 7
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/// RAM in 0xA000, 0xE000 I/O in 0xD000
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.const PROCPORT_RAM_IO = 5
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/// The colors of the C64
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.const BLACK = 0
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.const WHITE = 1
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.const OFFSET_STRUCT_MOS6526_CIA_INTERRUPT = $d
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/// $D012 RASTER Raster counter
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.label RASTER = $d012
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/// $D020 Border Color
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.label BORDER_COLOR = $d020
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/// $D021 Background Color 0
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.label BG_COLOR = $d021
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/// $D011 Control Register #1
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/// - Bit#0-#2: YSCROLL Screen Soft Scroll Vertical
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/// - Bit#3: RSEL Switch betweem 25 or 24 visible rows
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/// RSEL| Display window height | First line | Last line
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/// ----+--------------------------+-------------+----------
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/// 0 | 24 text lines/192 pixels | 55 ($37) | 246 ($f6)
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/// 1 | 25 text lines/200 pixels | 51 ($33) | 250 ($fa)
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/// - Bit#4: DEN Switch VIC-II output on/off
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/// - Bit#5: BMM Turn Bitmap Mode on/off
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/// - Bit#6: ECM Turn Extended Color Mode on/off
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/// - Bit#7: RST8 9th Bit for $D012 Rasterline counter
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/// Initial Value: %10011011
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.label VICII_CONTROL1 = $d011
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/// VIC II IRQ Status Register
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.label IRQ_STATUS = $d019
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/// VIC II IRQ Enable Register
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.label IRQ_ENABLE = $d01a
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/// Processor port data direction register
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.label PROCPORT_DDR = 0
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/// Processor Port Register controlling RAM/ROM configuration and the datasette
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.label PROCPORT = 1
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/// The CIA#1: keyboard matrix, joystick #1/#2
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.label CIA1 = $dc00
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/// The vector used when the HARDWARE serves IRQ interrupts
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.label HARDWARE_IRQ = $fffe
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.segment Code
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// irq
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// Interrupt Routine
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irq: {
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// interrupt(isr_hardware_clobber_entry) -- isr_hardware_all_entry
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sta rega+1
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// [1] call do_irq
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jsr do_irq
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jmp __breturn
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// irq::@return
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__breturn:
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// [2] return
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// interrupt(isr_hardware_clobber_exit) -- isr_hardware_all_exit
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rega:
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lda #0
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rti
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}
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// main
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main: {
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// asm { sei }
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sei
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// [4] *PROCPORT_DDR = PROCPORT_DDR_MEMORY_MASK -- _deref_pbuc1=vbuc2
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// Disable kernal & basic
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lda #PROCPORT_DDR_MEMORY_MASK
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sta.z PROCPORT_DDR
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// [5] *PROCPORT = PROCPORT_RAM_IO -- _deref_pbuc1=vbuc2
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lda #PROCPORT_RAM_IO
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sta.z PROCPORT
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// [6] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) = CIA_INTERRUPT_CLEAR_ALL -- _deref_pbuc1=vbuc2
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// Disable CIA 1 Timer IRQ
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lda #CIA_INTERRUPT_CLEAR_ALL
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sta CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT
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// [7] *VICII_CONTROL1 = *VICII_CONTROL1 | $80 -- _deref_pbuc1=_deref_pbuc1_bor_vbuc2
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// Set raster line to $100
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lda #$80
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ora VICII_CONTROL1
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sta VICII_CONTROL1
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// [8] *RASTER = 0 -- _deref_pbuc1=vbuc2
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lda #0
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sta RASTER
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// [9] *IRQ_ENABLE = IRQ_RASTER -- _deref_pbuc1=vbuc2
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// Enable Raster Interrupt
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lda #IRQ_RASTER
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sta IRQ_ENABLE
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// [10] *HARDWARE_IRQ = &irq -- _deref_qprc1=pprc2
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// Set the IRQ routine
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lda #<irq
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sta HARDWARE_IRQ
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lda #>irq
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sta HARDWARE_IRQ+1
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// asm { cli }
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cli
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jmp __b1
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// main::@1
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__b1:
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// [12] *BORDER_COLOR = ++ *BORDER_COLOR -- _deref_pbuc1=_inc__deref_pbuc1
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inc BORDER_COLOR
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jmp __b1
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}
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// do_irq
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do_irq: {
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// [13] *BG_COLOR = WHITE -- _deref_pbuc1=vbuc2
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lda #WHITE
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sta BG_COLOR
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// [14] *BG_COLOR = BLACK -- _deref_pbuc1=vbuc2
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lda #BLACK
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sta BG_COLOR
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// [15] *IRQ_STATUS = IRQ_RASTER -- _deref_pbuc1=vbuc2
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// Acknowledge the IRQ
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lda #IRQ_RASTER
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sta IRQ_STATUS
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jmp __breturn
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// do_irq::@return
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__breturn:
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// [16] return
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rts
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}
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// File Data
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ASSEMBLER OPTIMIZATIONS
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Removing instruction jmp __breturn
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Removing instruction jmp __b1
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Removing instruction jmp __breturn
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Succesful ASM optimization Pass5NextJumpElimination
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Removing instruction __breturn:
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Succesful ASM optimization Pass5RedundantLabelElimination
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Removing instruction __breturn:
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Succesful ASM optimization Pass5UnusedLabelElimination
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FINAL SYMBOL TABLE
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__constant char * const BG_COLOR = (char *) 53281
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__constant const char BLACK = 0
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__constant char * const BORDER_COLOR = (char *) 53280
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__constant struct MOS6526_CIA * const CIA1 = (struct MOS6526_CIA *) 56320
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__constant const char CIA_INTERRUPT_CLEAR_ALL = $7f
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__constant void (** const HARDWARE_IRQ)() = (void (**)()) 65534
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__constant char * const IRQ_ENABLE = (char *) 53274
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__constant const char IRQ_RASTER = 1
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__constant char * const IRQ_STATUS = (char *) 53273
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__constant char OFFSET_STRUCT_MOS6526_CIA_INTERRUPT = $d
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__constant char * const PROCPORT = (char *) 1
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__constant char * const PROCPORT_DDR = (char *) 0
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__constant const char PROCPORT_DDR_MEMORY_MASK = 7
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__constant const char PROCPORT_RAM_IO = 5
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__constant char * const RASTER = (char *) 53266
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__constant char * const VICII_CONTROL1 = (char *) 53265
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__constant const char WHITE = 1
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void do_irq()
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__interrupt(hardware_clobber) void irq()
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void main()
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FINAL ASSEMBLER
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Score: 294
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// File Comments
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// A minimal working raster hardware IRQ with clobber-based register savings
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/// @file
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/// Commodore 64 Registers and Constants
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/// @file
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/// The MOS 6526 Complex Interface Adapter (CIA)
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///
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/// http://archive.6502.org/datasheets/mos_6526_cia_recreated.pdf
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// Upstart
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// Commodore 64 PRG executable file
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.file [name="irq-hardware-clobber-jsr.prg", type="prg", segments="Program"]
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.segmentdef Program [segments="Basic, Code, Data"]
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.segmentdef Basic [start=$0801]
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.segmentdef Code [start=$80d]
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.segmentdef Data [startAfter="Code"]
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.segment Basic
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:BasicUpstart(main)
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// Global Constants & labels
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/// Value that disables all CIA interrupts when stored to the CIA Interrupt registers
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.const CIA_INTERRUPT_CLEAR_ALL = $7f
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/// VICII IRQ Status/Enable Raster
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// @see #IRQ_ENABLE #IRQ_STATUS
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/// 0 | RST| Reaching a certain raster line. The line is specified by writing
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/// | | to register 0xd012 and bit 7 of $d011 and internally stored by
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/// | | the VIC for the raster compare. The test for reaching the
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/// | | interrupt raster line is done in cycle 0 of every line (for line
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/// | | 0, in cycle 1).
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.const IRQ_RASTER = 1
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/// Mask for PROCESSOR_PORT_DDR which allows only memory configuration to be written
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.const PROCPORT_DDR_MEMORY_MASK = 7
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/// RAM in 0xA000, 0xE000 I/O in 0xD000
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.const PROCPORT_RAM_IO = 5
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/// The colors of the C64
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.const BLACK = 0
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.const WHITE = 1
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.const OFFSET_STRUCT_MOS6526_CIA_INTERRUPT = $d
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/// $D012 RASTER Raster counter
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.label RASTER = $d012
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/// $D020 Border Color
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.label BORDER_COLOR = $d020
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/// $D021 Background Color 0
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.label BG_COLOR = $d021
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/// $D011 Control Register #1
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/// - Bit#0-#2: YSCROLL Screen Soft Scroll Vertical
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/// - Bit#3: RSEL Switch betweem 25 or 24 visible rows
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/// RSEL| Display window height | First line | Last line
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/// ----+--------------------------+-------------+----------
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/// 0 | 24 text lines/192 pixels | 55 ($37) | 246 ($f6)
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/// 1 | 25 text lines/200 pixels | 51 ($33) | 250 ($fa)
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/// - Bit#4: DEN Switch VIC-II output on/off
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/// - Bit#5: BMM Turn Bitmap Mode on/off
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/// - Bit#6: ECM Turn Extended Color Mode on/off
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/// - Bit#7: RST8 9th Bit for $D012 Rasterline counter
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/// Initial Value: %10011011
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.label VICII_CONTROL1 = $d011
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/// VIC II IRQ Status Register
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.label IRQ_STATUS = $d019
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/// VIC II IRQ Enable Register
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.label IRQ_ENABLE = $d01a
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/// Processor port data direction register
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.label PROCPORT_DDR = 0
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/// Processor Port Register controlling RAM/ROM configuration and the datasette
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.label PROCPORT = 1
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/// The CIA#1: keyboard matrix, joystick #1/#2
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.label CIA1 = $dc00
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/// The vector used when the HARDWARE serves IRQ interrupts
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.label HARDWARE_IRQ = $fffe
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.segment Code
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// irq
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// Interrupt Routine
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irq: {
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// interrupt(isr_hardware_clobber_entry) -- isr_hardware_all_entry
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sta rega+1
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// do_irq()
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// [1] call do_irq
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jsr do_irq
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// irq::@return
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// }
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// [2] return
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// interrupt(isr_hardware_clobber_exit) -- isr_hardware_all_exit
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rega:
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lda #0
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rti
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}
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// main
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main: {
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// asm
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// asm { sei }
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sei
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// *PROCPORT_DDR = PROCPORT_DDR_MEMORY_MASK
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// [4] *PROCPORT_DDR = PROCPORT_DDR_MEMORY_MASK -- _deref_pbuc1=vbuc2
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// Disable kernal & basic
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lda #PROCPORT_DDR_MEMORY_MASK
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sta.z PROCPORT_DDR
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// *PROCPORT = PROCPORT_RAM_IO
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// [5] *PROCPORT = PROCPORT_RAM_IO -- _deref_pbuc1=vbuc2
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lda #PROCPORT_RAM_IO
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sta.z PROCPORT
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// CIA1->INTERRUPT = CIA_INTERRUPT_CLEAR_ALL
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// [6] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) = CIA_INTERRUPT_CLEAR_ALL -- _deref_pbuc1=vbuc2
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// Disable CIA 1 Timer IRQ
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lda #CIA_INTERRUPT_CLEAR_ALL
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sta CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT
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// *VICII_CONTROL1 |=$80
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// [7] *VICII_CONTROL1 = *VICII_CONTROL1 | $80 -- _deref_pbuc1=_deref_pbuc1_bor_vbuc2
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// Set raster line to $100
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lda #$80
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ora VICII_CONTROL1
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sta VICII_CONTROL1
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// *RASTER = $00
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// [8] *RASTER = 0 -- _deref_pbuc1=vbuc2
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lda #0
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sta RASTER
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// *IRQ_ENABLE = IRQ_RASTER
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// [9] *IRQ_ENABLE = IRQ_RASTER -- _deref_pbuc1=vbuc2
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// Enable Raster Interrupt
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lda #IRQ_RASTER
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sta IRQ_ENABLE
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// *HARDWARE_IRQ = &irq
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// [10] *HARDWARE_IRQ = &irq -- _deref_qprc1=pprc2
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// Set the IRQ routine
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lda #<irq
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sta HARDWARE_IRQ
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lda #>irq
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sta HARDWARE_IRQ+1
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// asm
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// asm { cli }
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cli
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// main::@1
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__b1:
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// (*BORDER_COLOR)++;
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// [12] *BORDER_COLOR = ++ *BORDER_COLOR -- _deref_pbuc1=_inc__deref_pbuc1
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inc BORDER_COLOR
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jmp __b1
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}
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// do_irq
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do_irq: {
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// *BG_COLOR = WHITE
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// [13] *BG_COLOR = WHITE -- _deref_pbuc1=vbuc2
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lda #WHITE
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sta BG_COLOR
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// *BG_COLOR = BLACK
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// [14] *BG_COLOR = BLACK -- _deref_pbuc1=vbuc2
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lda #BLACK
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sta BG_COLOR
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// *IRQ_STATUS = IRQ_RASTER
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// [15] *IRQ_STATUS = IRQ_RASTER -- _deref_pbuc1=vbuc2
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// Acknowledge the IRQ
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lda #IRQ_RASTER
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sta IRQ_STATUS
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// do_irq::@return
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// }
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// [16] return
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rts
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}
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// File Data
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