mirror of
https://gitlab.com/camelot/kickc.git
synced 2024-06-03 07:29:37 +00:00
654 lines
28 KiB
Plaintext
654 lines
28 KiB
Plaintext
Resolved forward reference irq_bottom_1 to __interrupt(hardware_clobber) void irq_bottom_1()
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Resolved forward reference irq_bottom_2 to __interrupt(hardware_clobber) void irq_bottom_2()
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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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*GHOST_BYTE = 0
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asm { sei }
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*((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) = CIA_INTERRUPT_CLEAR_ALL
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*((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) & $7f
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*((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fa
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*((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_ENABLE) = IRQ_RASTER
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*HARDWARE_IRQ = &irq_bottom_1
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*PROCPORT_DDR = PROCPORT_DDR_MEMORY_MASK
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*PROCPORT = PROCPORT_RAM_IO
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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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to:main::@1
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main::@return: scope:[main] from
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return
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to:@return
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__interrupt(hardware_clobber) void irq_bottom_1()
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irq_bottom_1: scope:[irq_bottom_1] from
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*((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = WHITE
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*((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) & $ff^VICII_RSEL
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*((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS) = IRQ_RASTER
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*((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fd
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*HARDWARE_IRQ = &irq_bottom_2
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*((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = RED
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to:irq_bottom_1::@return
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irq_bottom_1::@return: scope:[irq_bottom_1] from irq_bottom_1
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return
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to:@return
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__interrupt(hardware_clobber) void irq_bottom_2()
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irq_bottom_2: scope:[irq_bottom_2] from
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*((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = WHITE
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*((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) | VICII_RSEL
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*((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS) = IRQ_RASTER
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*((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fa
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*HARDWARE_IRQ = &irq_bottom_1
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*((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = RED
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to:irq_bottom_2::@return
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irq_bottom_2::@return: scope:[irq_bottom_2] from irq_bottom_2
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return
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to:@return
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void __start()
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__start: scope:[__start] from
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call main
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to:__start::@1
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__start::@1: scope:[__start] from __start
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to:__start::@return
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__start::@return: scope:[__start] from __start::@1
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return
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to:@return
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SYMBOL TABLE SSA
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__constant struct MOS6526_CIA * const CIA1 = (struct MOS6526_CIA *)$dc00
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__constant const char CIA_INTERRUPT_CLEAR_ALL = $7f
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__constant char * const GHOST_BYTE = (char *)$3fff
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__constant void (** const HARDWARE_IRQ)() = (void (**)())$fffe
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__constant const char IRQ_RASTER = 1
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__constant char OFFSET_STRUCT_MOS6526_CIA_INTERRUPT = $d
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__constant char OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR = $20
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__constant char OFFSET_STRUCT_MOS6569_VICII_CONTROL1 = $11
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__constant char OFFSET_STRUCT_MOS6569_VICII_IRQ_ENABLE = $1a
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__constant char OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS = $19
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__constant char OFFSET_STRUCT_MOS6569_VICII_RASTER = $12
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__constant char * const PROCPORT = (char *)1
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__constant char * const PROCPORT_DDR = (char *)0
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__constant const char PROCPORT_DDR_MEMORY_MASK = 7
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__constant const char PROCPORT_RAM_IO = 5
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__constant const char RED = 2
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__constant struct MOS6569_VICII * const VICII = (struct MOS6569_VICII *)$d000
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__constant const char VICII_RSEL = 8
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__constant const char WHITE = 1
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void __start()
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__interrupt(hardware_clobber) void irq_bottom_1()
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__interrupt(hardware_clobber) void irq_bottom_2()
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void main()
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Adding number conversion cast (unumber) 0 in *GHOST_BYTE = 0
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Adding number conversion cast (unumber) $7f in *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) & $7f
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Adding number conversion cast (unumber) $fa in *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fa
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Adding number conversion cast (unumber) $ff^VICII_RSEL in *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) & $ff^VICII_RSEL
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Adding number conversion cast (unumber) $ff in *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) & (unumber)$ff^VICII_RSEL
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Adding number conversion cast (unumber) $fd in *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fd
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Adding number conversion cast (unumber) $fa in *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fa
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Successful SSA optimization PassNAddNumberTypeConversions
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Inlining cast *GHOST_BYTE = (unumber)0
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Inlining cast *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = (unumber)$fa
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Inlining cast *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = (unumber)$fd
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Inlining cast *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = (unumber)$fa
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Successful SSA optimization Pass2InlineCast
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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 MOS6569_VICII *) 53248
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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 pointer cast (char *) 16383
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Simplifying constant integer cast 0
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Simplifying constant integer cast $7f
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Simplifying constant integer cast $fa
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Simplifying constant integer cast (unumber)$ff^VICII_RSEL
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Simplifying constant integer cast $ff
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Simplifying constant integer cast $fd
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Simplifying constant integer cast $fa
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Successful SSA optimization PassNCastSimplification
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Finalized unsigned number type (char) 0
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Finalized unsigned number type (char) $7f
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Finalized unsigned number type (char) $fa
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Finalized unsigned number type (char) $ff
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Finalized unsigned number type (char) $fd
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Finalized unsigned number type (char) $fa
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Successful SSA optimization PassNFinalizeNumberTypeConversions
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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 main::@1
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CALL GRAPH
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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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Adding NOP phi() at start of main::@1
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FINAL CONTROL FLOW GRAPH
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__interrupt(hardware_clobber) void irq_bottom_2()
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irq_bottom_2: scope:[irq_bottom_2] from
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[0] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = WHITE
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[1] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) | VICII_RSEL
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[2] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS) = IRQ_RASTER
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[3] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fa
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[4] *HARDWARE_IRQ = &irq_bottom_1
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[5] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = RED
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to:irq_bottom_2::@return
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irq_bottom_2::@return: scope:[irq_bottom_2] from irq_bottom_2
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[6] return
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to:@return
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__interrupt(hardware_clobber) void irq_bottom_1()
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irq_bottom_1: scope:[irq_bottom_1] from
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[7] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = WHITE
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[8] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) & $ff^VICII_RSEL
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[9] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS) = IRQ_RASTER
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[10] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fd
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[11] *HARDWARE_IRQ = &irq_bottom_2
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[12] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = RED
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to:irq_bottom_1::@return
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irq_bottom_1::@return: scope:[irq_bottom_1] from irq_bottom_1
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[13] 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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[14] *GHOST_BYTE = 0
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asm { sei }
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[16] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) = CIA_INTERRUPT_CLEAR_ALL
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[17] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) & $7f
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[18] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fa
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[19] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_ENABLE) = IRQ_RASTER
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[20] *HARDWARE_IRQ = &irq_bottom_1
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[21] *PROCPORT_DDR = PROCPORT_DDR_MEMORY_MASK
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[22] *PROCPORT = PROCPORT_RAM_IO
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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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[24] phi()
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to:main::@1
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VARIABLE REGISTER WEIGHTS
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__interrupt(hardware_clobber) void irq_bottom_1()
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__interrupt(hardware_clobber) void irq_bottom_2()
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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 [0] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = WHITE [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [1] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) | VICII_RSEL [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [2] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS) = IRQ_RASTER [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [3] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fa [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [4] *HARDWARE_IRQ = &irq_bottom_1 [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [5] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = RED [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [6] return [ ] ( [ ] { } ) always clobbers reg byte a reg byte x reg byte y
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Statement [7] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = WHITE [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [8] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) & $ff^VICII_RSEL [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [9] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS) = IRQ_RASTER [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [10] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fd [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [11] *HARDWARE_IRQ = &irq_bottom_2 [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [12] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = RED [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [13] return [ ] ( [ ] { } ) always clobbers reg byte a reg byte x reg byte y
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Statement [14] *GHOST_BYTE = 0 [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [16] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) = CIA_INTERRUPT_CLEAR_ALL [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [17] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) & $7f [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [18] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fa [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [19] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_ENABLE) = IRQ_RASTER [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [20] *HARDWARE_IRQ = &irq_bottom_1 [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [21] *PROCPORT_DDR = PROCPORT_DDR_MEMORY_MASK [ ] ( [ ] { } ) always clobbers reg byte a
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Statement [22] *PROCPORT = PROCPORT_RAM_IO [ ] ( [ ] { } ) 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_bottom_1]
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Uplift Scope [irq_bottom_2]
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Uplift Scope []
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Uplifting [MOS6526_CIA] best 698 combination
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Uplifting [MOS6569_VICII] best 698 combination
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Uplifting [MOS6581_SID] best 698 combination
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Uplifting [main] best 698 combination
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Uplifting [irq_bottom_1] best 698 combination
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Uplifting [irq_bottom_2] best 698 combination
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Uplifting [] best 698 combination
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Interrupt procedure irq_bottom_1 clobbers AnzP
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Interrupt procedure irq_bottom_2 clobbers AnzP
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ASSEMBLER BEFORE OPTIMIZATION
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// File Comments
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// A raster IRQ that opens the top/bottom border.
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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-hyperscreen.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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/// $D011 Control Register #1 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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.const VICII_RSEL = 8
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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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.const WHITE = 1
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.const RED = 2
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.const OFFSET_STRUCT_MOS6526_CIA_INTERRUPT = $d
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.const OFFSET_STRUCT_MOS6569_VICII_CONTROL1 = $11
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.const OFFSET_STRUCT_MOS6569_VICII_RASTER = $12
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.const OFFSET_STRUCT_MOS6569_VICII_IRQ_ENABLE = $1a
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.const OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR = $20
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.const OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS = $19
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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 VIC-II MOS 6567/6569
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.label VICII = $d000
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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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.label GHOST_BYTE = $3fff
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.segment Code
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// irq_bottom_2
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// Interrupt Routine 2
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irq_bottom_2: {
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// interrupt(isr_hardware_clobber_entry) -- isr_hardware_all_entry
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sta rega+1
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// [0] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = WHITE -- _deref_pbuc1=vbuc2
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lda #WHITE
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sta VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR
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// [1] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) | VICII_RSEL -- _deref_pbuc1=_deref_pbuc1_bor_vbuc2
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// Set screen height back to 25 lines (preparing for the next screen)
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lda #VICII_RSEL
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ora VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1
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sta VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1
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// [2] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_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 VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS
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// [3] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fa -- _deref_pbuc1=vbuc2
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// Trigger IRQ 1 at line 0xfa
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lda #$fa
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sta VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER
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// [4] *HARDWARE_IRQ = &irq_bottom_1 -- _deref_qprc1=pprc2
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lda #<irq_bottom_1
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sta HARDWARE_IRQ
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lda #>irq_bottom_1
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sta HARDWARE_IRQ+1
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// [5] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = RED -- _deref_pbuc1=vbuc2
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lda #RED
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sta VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR
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jmp __breturn
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|
// irq_bottom_2::@return
|
|
__breturn:
|
|
// [6] return
|
|
// interrupt(isr_hardware_clobber_exit) -- isr_hardware_all_exit
|
|
rega:
|
|
lda #0
|
|
rti
|
|
}
|
|
// irq_bottom_1
|
|
// Interrupt Routine 1
|
|
irq_bottom_1: {
|
|
// interrupt(isr_hardware_clobber_entry) -- isr_hardware_all_entry
|
|
sta rega+1
|
|
// [7] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = WHITE -- _deref_pbuc1=vbuc2
|
|
lda #WHITE
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR
|
|
// [8] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) & $ff^VICII_RSEL -- _deref_pbuc1=_deref_pbuc1_band_vbuc2
|
|
// Set screen height to 24 lines - this is done after the border should have started drawing - so it wont start
|
|
lda #$ff^VICII_RSEL
|
|
and VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1
|
|
// [9] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS) = IRQ_RASTER -- _deref_pbuc1=vbuc2
|
|
// Acknowledge the IRQ
|
|
lda #IRQ_RASTER
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS
|
|
// [10] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fd -- _deref_pbuc1=vbuc2
|
|
// Trigger IRQ 2 at line 0xfd
|
|
lda #$fd
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER
|
|
// [11] *HARDWARE_IRQ = &irq_bottom_2 -- _deref_qprc1=pprc2
|
|
lda #<irq_bottom_2
|
|
sta HARDWARE_IRQ
|
|
lda #>irq_bottom_2
|
|
sta HARDWARE_IRQ+1
|
|
// [12] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = RED -- _deref_pbuc1=vbuc2
|
|
lda #RED
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR
|
|
jmp __breturn
|
|
// irq_bottom_1::@return
|
|
__breturn:
|
|
// [13] return
|
|
// interrupt(isr_hardware_clobber_exit) -- isr_hardware_all_exit
|
|
rega:
|
|
lda #0
|
|
rti
|
|
}
|
|
// main
|
|
main: {
|
|
// [14] *GHOST_BYTE = 0 -- _deref_pbuc1=vbuc2
|
|
lda #0
|
|
sta GHOST_BYTE
|
|
// asm { sei }
|
|
sei
|
|
// [16] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) = CIA_INTERRUPT_CLEAR_ALL -- _deref_pbuc1=vbuc2
|
|
// Disable CIA 1 Timer IRQ
|
|
lda #CIA_INTERRUPT_CLEAR_ALL
|
|
sta CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT
|
|
// [17] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) & $7f -- _deref_pbuc1=_deref_pbuc1_band_vbuc2
|
|
// Set raster line to 0xfa
|
|
lda #$7f
|
|
and VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1
|
|
// [18] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fa -- _deref_pbuc1=vbuc2
|
|
lda #$fa
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER
|
|
// [19] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_ENABLE) = IRQ_RASTER -- _deref_pbuc1=vbuc2
|
|
// Enable Raster Interrupt
|
|
lda #IRQ_RASTER
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_ENABLE
|
|
// [20] *HARDWARE_IRQ = &irq_bottom_1 -- _deref_qprc1=pprc2
|
|
// Set the IRQ routine
|
|
lda #<irq_bottom_1
|
|
sta HARDWARE_IRQ
|
|
lda #>irq_bottom_1
|
|
sta HARDWARE_IRQ+1
|
|
// [21] *PROCPORT_DDR = PROCPORT_DDR_MEMORY_MASK -- _deref_pbuc1=vbuc2
|
|
// no kernal or BASIC rom visible
|
|
lda #PROCPORT_DDR_MEMORY_MASK
|
|
sta.z PROCPORT_DDR
|
|
// [22] *PROCPORT = PROCPORT_RAM_IO -- _deref_pbuc1=vbuc2
|
|
lda #PROCPORT_RAM_IO
|
|
sta.z PROCPORT
|
|
// asm { cli }
|
|
cli
|
|
// [24] phi from main main::@1 to main::@1 [phi:main/main::@1->main::@1]
|
|
__b1_from_main:
|
|
__b1_from___b1:
|
|
jmp __b1
|
|
// main::@1
|
|
__b1:
|
|
jmp __b1_from___b1
|
|
}
|
|
// File Data
|
|
|
|
ASSEMBLER OPTIMIZATIONS
|
|
Removing instruction jmp __breturn
|
|
Removing instruction jmp __breturn
|
|
Removing instruction jmp __b1
|
|
Succesful ASM optimization Pass5NextJumpElimination
|
|
Replacing label __b1_from___b1 with __b1
|
|
Removing instruction __breturn:
|
|
Removing instruction __breturn:
|
|
Removing instruction __b1_from_main:
|
|
Removing instruction __b1_from___b1:
|
|
Succesful ASM optimization Pass5RedundantLabelElimination
|
|
|
|
FINAL SYMBOL TABLE
|
|
__constant struct MOS6526_CIA * const CIA1 = (struct MOS6526_CIA *) 56320
|
|
__constant const char CIA_INTERRUPT_CLEAR_ALL = $7f
|
|
__constant char * const GHOST_BYTE = (char *) 16383
|
|
__constant void (** const HARDWARE_IRQ)() = (void (**)()) 65534
|
|
__constant const char IRQ_RASTER = 1
|
|
__constant char OFFSET_STRUCT_MOS6526_CIA_INTERRUPT = $d
|
|
__constant char OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR = $20
|
|
__constant char OFFSET_STRUCT_MOS6569_VICII_CONTROL1 = $11
|
|
__constant char OFFSET_STRUCT_MOS6569_VICII_IRQ_ENABLE = $1a
|
|
__constant char OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS = $19
|
|
__constant char OFFSET_STRUCT_MOS6569_VICII_RASTER = $12
|
|
__constant char * const PROCPORT = (char *) 1
|
|
__constant char * const PROCPORT_DDR = (char *) 0
|
|
__constant const char PROCPORT_DDR_MEMORY_MASK = 7
|
|
__constant const char PROCPORT_RAM_IO = 5
|
|
__constant const char RED = 2
|
|
__constant struct MOS6569_VICII * const VICII = (struct MOS6569_VICII *) 53248
|
|
__constant const char VICII_RSEL = 8
|
|
__constant const char WHITE = 1
|
|
__interrupt(hardware_clobber) void irq_bottom_1()
|
|
__interrupt(hardware_clobber) void irq_bottom_2()
|
|
void main()
|
|
|
|
|
|
|
|
FINAL ASSEMBLER
|
|
Score: 422
|
|
|
|
// File Comments
|
|
// A raster IRQ that opens the top/bottom border.
|
|
/// @file
|
|
/// Commodore 64 Registers and Constants
|
|
/// @file
|
|
/// The MOS 6526 Complex Interface Adapter (CIA)
|
|
///
|
|
/// http://archive.6502.org/datasheets/mos_6526_cia_recreated.pdf
|
|
// Upstart
|
|
// Commodore 64 PRG executable file
|
|
.file [name="irq-hyperscreen.prg", type="prg", segments="Program"]
|
|
.segmentdef Program [segments="Basic, Code, Data"]
|
|
.segmentdef Basic [start=$0801]
|
|
.segmentdef Code [start=$80d]
|
|
.segmentdef Data [startAfter="Code"]
|
|
.segment Basic
|
|
:BasicUpstart(main)
|
|
// Global Constants & labels
|
|
/// Value that disables all CIA interrupts when stored to the CIA Interrupt registers
|
|
.const CIA_INTERRUPT_CLEAR_ALL = $7f
|
|
/// $D011 Control Register #1 Bit#3: RSEL Switch betweem 25 or 24 visible rows
|
|
/// RSEL| Display window height | First line | Last line
|
|
/// ----+--------------------------+-------------+----------
|
|
/// 0 | 24 text lines/192 pixels | 55 ($37) | 246 ($f6)
|
|
/// 1 | 25 text lines/200 pixels | 51 ($33) | 250 ($fa)
|
|
.const VICII_RSEL = 8
|
|
/// VICII IRQ Status/Enable Raster
|
|
// @see #IRQ_ENABLE #IRQ_STATUS
|
|
/// 0 | RST| Reaching a certain raster line. The line is specified by writing
|
|
/// | | to register 0xd012 and bit 7 of $d011 and internally stored by
|
|
/// | | the VIC for the raster compare. The test for reaching the
|
|
/// | | interrupt raster line is done in cycle 0 of every line (for line
|
|
/// | | 0, in cycle 1).
|
|
.const IRQ_RASTER = 1
|
|
/// Mask for PROCESSOR_PORT_DDR which allows only memory configuration to be written
|
|
.const PROCPORT_DDR_MEMORY_MASK = 7
|
|
/// RAM in 0xA000, 0xE000 I/O in 0xD000
|
|
.const PROCPORT_RAM_IO = 5
|
|
.const WHITE = 1
|
|
.const RED = 2
|
|
.const OFFSET_STRUCT_MOS6526_CIA_INTERRUPT = $d
|
|
.const OFFSET_STRUCT_MOS6569_VICII_CONTROL1 = $11
|
|
.const OFFSET_STRUCT_MOS6569_VICII_RASTER = $12
|
|
.const OFFSET_STRUCT_MOS6569_VICII_IRQ_ENABLE = $1a
|
|
.const OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR = $20
|
|
.const OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS = $19
|
|
/// Processor port data direction register
|
|
.label PROCPORT_DDR = 0
|
|
/// Processor Port Register controlling RAM/ROM configuration and the datasette
|
|
.label PROCPORT = 1
|
|
/// The VIC-II MOS 6567/6569
|
|
.label VICII = $d000
|
|
/// The CIA#1: keyboard matrix, joystick #1/#2
|
|
.label CIA1 = $dc00
|
|
/// The vector used when the HARDWARE serves IRQ interrupts
|
|
.label HARDWARE_IRQ = $fffe
|
|
.label GHOST_BYTE = $3fff
|
|
.segment Code
|
|
// irq_bottom_2
|
|
// Interrupt Routine 2
|
|
irq_bottom_2: {
|
|
// interrupt(isr_hardware_clobber_entry) -- isr_hardware_all_entry
|
|
sta rega+1
|
|
// VICII->BORDER_COLOR = WHITE
|
|
// [0] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = WHITE -- _deref_pbuc1=vbuc2
|
|
lda #WHITE
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR
|
|
// VICII->CONTROL1 |= VICII_RSEL
|
|
// [1] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) | VICII_RSEL -- _deref_pbuc1=_deref_pbuc1_bor_vbuc2
|
|
// Set screen height back to 25 lines (preparing for the next screen)
|
|
lda #VICII_RSEL
|
|
ora VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1
|
|
// VICII->IRQ_STATUS = IRQ_RASTER
|
|
// [2] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS) = IRQ_RASTER -- _deref_pbuc1=vbuc2
|
|
// Acknowledge the IRQ
|
|
lda #IRQ_RASTER
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS
|
|
// VICII->RASTER = 0xfa
|
|
// [3] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fa -- _deref_pbuc1=vbuc2
|
|
// Trigger IRQ 1 at line 0xfa
|
|
lda #$fa
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER
|
|
// *HARDWARE_IRQ = &irq_bottom_1
|
|
// [4] *HARDWARE_IRQ = &irq_bottom_1 -- _deref_qprc1=pprc2
|
|
lda #<irq_bottom_1
|
|
sta HARDWARE_IRQ
|
|
lda #>irq_bottom_1
|
|
sta HARDWARE_IRQ+1
|
|
// VICII->BORDER_COLOR = RED
|
|
// [5] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = RED -- _deref_pbuc1=vbuc2
|
|
lda #RED
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR
|
|
// irq_bottom_2::@return
|
|
// }
|
|
// [6] return
|
|
// interrupt(isr_hardware_clobber_exit) -- isr_hardware_all_exit
|
|
rega:
|
|
lda #0
|
|
rti
|
|
}
|
|
// irq_bottom_1
|
|
// Interrupt Routine 1
|
|
irq_bottom_1: {
|
|
// interrupt(isr_hardware_clobber_entry) -- isr_hardware_all_entry
|
|
sta rega+1
|
|
// VICII->BORDER_COLOR = WHITE
|
|
// [7] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = WHITE -- _deref_pbuc1=vbuc2
|
|
lda #WHITE
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR
|
|
// VICII->CONTROL1 &= (0xff^VICII_RSEL)
|
|
// [8] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) & $ff^VICII_RSEL -- _deref_pbuc1=_deref_pbuc1_band_vbuc2
|
|
// Set screen height to 24 lines - this is done after the border should have started drawing - so it wont start
|
|
lda #$ff^VICII_RSEL
|
|
and VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1
|
|
// VICII->IRQ_STATUS = IRQ_RASTER
|
|
// [9] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS) = IRQ_RASTER -- _deref_pbuc1=vbuc2
|
|
// Acknowledge the IRQ
|
|
lda #IRQ_RASTER
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_STATUS
|
|
// VICII->RASTER = 0xfd
|
|
// [10] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fd -- _deref_pbuc1=vbuc2
|
|
// Trigger IRQ 2 at line 0xfd
|
|
lda #$fd
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER
|
|
// *HARDWARE_IRQ = &irq_bottom_2
|
|
// [11] *HARDWARE_IRQ = &irq_bottom_2 -- _deref_qprc1=pprc2
|
|
lda #<irq_bottom_2
|
|
sta HARDWARE_IRQ
|
|
lda #>irq_bottom_2
|
|
sta HARDWARE_IRQ+1
|
|
// VICII->BORDER_COLOR = RED
|
|
// [12] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR) = RED -- _deref_pbuc1=vbuc2
|
|
lda #RED
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_BORDER_COLOR
|
|
// irq_bottom_1::@return
|
|
// }
|
|
// [13] return
|
|
// interrupt(isr_hardware_clobber_exit) -- isr_hardware_all_exit
|
|
rega:
|
|
lda #0
|
|
rti
|
|
}
|
|
// main
|
|
main: {
|
|
// *GHOST_BYTE = 0
|
|
// [14] *GHOST_BYTE = 0 -- _deref_pbuc1=vbuc2
|
|
lda #0
|
|
sta GHOST_BYTE
|
|
// asm
|
|
// asm { sei }
|
|
sei
|
|
// CIA1->INTERRUPT = CIA_INTERRUPT_CLEAR_ALL
|
|
// [16] *((char *)CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT) = CIA_INTERRUPT_CLEAR_ALL -- _deref_pbuc1=vbuc2
|
|
// Disable CIA 1 Timer IRQ
|
|
lda #CIA_INTERRUPT_CLEAR_ALL
|
|
sta CIA1+OFFSET_STRUCT_MOS6526_CIA_INTERRUPT
|
|
// VICII->CONTROL1 &= 0x7f
|
|
// [17] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) = *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1) & $7f -- _deref_pbuc1=_deref_pbuc1_band_vbuc2
|
|
// Set raster line to 0xfa
|
|
lda #$7f
|
|
and VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_CONTROL1
|
|
// VICII->RASTER = 0xfa
|
|
// [18] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER) = $fa -- _deref_pbuc1=vbuc2
|
|
lda #$fa
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_RASTER
|
|
// VICII->IRQ_ENABLE = IRQ_RASTER
|
|
// [19] *((char *)VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_ENABLE) = IRQ_RASTER -- _deref_pbuc1=vbuc2
|
|
// Enable Raster Interrupt
|
|
lda #IRQ_RASTER
|
|
sta VICII+OFFSET_STRUCT_MOS6569_VICII_IRQ_ENABLE
|
|
// *HARDWARE_IRQ = &irq_bottom_1
|
|
// [20] *HARDWARE_IRQ = &irq_bottom_1 -- _deref_qprc1=pprc2
|
|
// Set the IRQ routine
|
|
lda #<irq_bottom_1
|
|
sta HARDWARE_IRQ
|
|
lda #>irq_bottom_1
|
|
sta HARDWARE_IRQ+1
|
|
// *PROCPORT_DDR = PROCPORT_DDR_MEMORY_MASK
|
|
// [21] *PROCPORT_DDR = PROCPORT_DDR_MEMORY_MASK -- _deref_pbuc1=vbuc2
|
|
// no kernal or BASIC rom visible
|
|
lda #PROCPORT_DDR_MEMORY_MASK
|
|
sta.z PROCPORT_DDR
|
|
// *PROCPORT = PROCPORT_RAM_IO
|
|
// [22] *PROCPORT = PROCPORT_RAM_IO -- _deref_pbuc1=vbuc2
|
|
lda #PROCPORT_RAM_IO
|
|
sta.z PROCPORT
|
|
// asm
|
|
// asm { cli }
|
|
cli
|
|
// [24] phi from main main::@1 to main::@1 [phi:main/main::@1->main::@1]
|
|
// main::@1
|
|
__b1:
|
|
jmp __b1
|
|
}
|
|
// File Data
|
|
|