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more forloop codegen
This commit is contained in:
Irmen de Jong
parent
e6ff87ecd0
commit
3976cc26a2
@ -14,10 +14,6 @@ import prog8.compiler.target.c64.C64MachineDefinition.ESTACK_LO_PLUS1_HEX
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import prog8.compiler.toHex
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import kotlin.math.absoluteValue
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// todo choose more efficient comparisons to avoid needless lda's
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// todo optimized code for step == 2 or -2
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// todo allocate loop counter variable dynamically, preferrably on zeropage
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internal class ForLoopsAsmGen(private val program: Program, private val asmgen: AsmGen) {
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internal fun translate(stmt: ForLoop) {
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@ -41,8 +37,6 @@ internal class ForLoopsAsmGen(private val program: Program, private val asmgen:
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}
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private fun translateForOverNonconstRange(stmt: ForLoop, iterableDt: DataType, range: RangeExpr) {
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// TODO more optimized code possible now that continue is gone?
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val loopLabel = asmgen.makeLabel("for_loop")
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val endLabel = asmgen.makeLabel("for_end")
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asmgen.loopEndLabels.push(endLabel)
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@ -66,13 +60,13 @@ $loopLabel""")
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asmgen.translate(stmt.body)
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asmgen.out("""
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lda $varname
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cmp $ESTACK_LO_PLUS1_HEX,x
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cmp $ESTACK_LO_PLUS1_HEX,x TODO modifying code
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beq $endLabel
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$incdec $varname
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jmp $loopLabel
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$endLabel inx""")
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}
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else {
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} else {
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// bytes, step >= 2 or <= -2
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@ -93,7 +87,7 @@ $loopLabel""")
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clc
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adc #$stepsize
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sta $varname
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cmp $ESTACK_LO_PLUS1_HEX,x
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cmp $ESTACK_LO_PLUS1_HEX,x TODO modifying code
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bcc $loopLabel
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beq $loopLabel""")
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} else {
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@ -101,7 +95,7 @@ $loopLabel""")
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sec
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sbc #${stepsize.absoluteValue}
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sta $varname
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cmp $ESTACK_LO_PLUS1_HEX,x
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cmp $ESTACK_LO_PLUS1_HEX,x TODO modifying code
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bcs $loopLabel""")
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}
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asmgen.out("""
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@ -123,10 +117,10 @@ $endLabel inx""")
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asmgen.translate(stmt.body)
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asmgen.out("""
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lda $varname+1
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cmp $ESTACK_HI_PLUS1_HEX,x
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cmp $ESTACK_HI_PLUS1_HEX,x TODO modifying code
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bne +
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lda $varname
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cmp $ESTACK_LO_PLUS1_HEX,x
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cmp $ESTACK_LO_PLUS1_HEX,x TODO modifying code
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beq $endLabel""")
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if(stepsize==1) {
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asmgen.out("""
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@ -166,12 +160,12 @@ $endLabel inx""")
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lda $varname+1
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adc #>$stepsize
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sta $varname+1
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lda $ESTACK_HI_PLUS1_HEX,x
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lda $ESTACK_HI_PLUS1_HEX,x TODO modifying code
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cmp $varname+1
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bcc $endLabel
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bne $loopLabel
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lda $varname
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cmp $ESTACK_LO_PLUS1_HEX,x
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cmp $ESTACK_LO_PLUS1_HEX,x TODO modifying code
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bcc $endLabel
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bcs $loopLabel
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$endLabel inx""")
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@ -184,9 +178,9 @@ $endLabel inx""")
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lda $varname+1
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adc #>$stepsize
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sta $varname+1
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lda $ESTACK_LO_PLUS1_HEX,x
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lda $ESTACK_LO_PLUS1_HEX,x TODO modifying code
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cmp $varname
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lda $ESTACK_HI_PLUS1_HEX,x
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lda $ESTACK_HI_PLUS1_HEX,x TODO modifying code
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sbc $varname+1
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bvc +
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eor #$80
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@ -214,11 +208,11 @@ $endLabel inx""")
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lda $varname+1
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sbc #>${stepsize.absoluteValue}
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sta $varname+1
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cmp $ESTACK_HI_PLUS1_HEX,x
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cmp $ESTACK_HI_PLUS1_HEX,x TODO modifying code
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bcc $endLabel
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bne $loopLabel
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lda $varname
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cmp $ESTACK_LO_PLUS1_HEX,x
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cmp $ESTACK_LO_PLUS1_HEX,x TODO modifying code
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bcs $loopLabel
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$endLabel inx""")
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} else {
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@ -232,9 +226,9 @@ $endLabel inx""")
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sbc #>${stepsize.absoluteValue}
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sta $varname+1
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pla
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cmp $ESTACK_LO_PLUS1_HEX,x
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cmp $ESTACK_LO_PLUS1_HEX,x TODO modifying code
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lda $varname+1
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sbc $ESTACK_HI_PLUS1_HEX,x
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sbc $ESTACK_HI_PLUS1_HEX,x TODO modifying code
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bvc +
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eor #$80
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+ bpl $loopLabel
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@ -250,7 +244,6 @@ $endLabel inx""")
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}
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private fun translateForOverIterableVar(stmt: ForLoop, iterableDt: DataType, ident: IdentifierReference) {
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// TODO more optimized code possible now that continue is gone?
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val loopLabel = asmgen.makeLabel("for_loop")
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val endLabel = asmgen.makeLabel("for_end")
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asmgen.loopEndLabels.push(endLabel)
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@ -275,9 +268,9 @@ $loopLabel lda ${65535.toHex()} ; modified
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$endLabel""")
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}
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DataType.ARRAY_UB, DataType.ARRAY_B -> {
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// TODO: optimize loop code when the length of the array is < 256
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// TODO: optimize loop code when the length of the array is < 256 (i.e. always)
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val length = decl.arraysize!!.size()!!
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val counterLabel = asmgen.makeLabel("for_counter")
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val counterLabel = asmgen.makeLabel("for_counter") // todo allocate dynamically, zero page preferred if iterations >= 8
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val modifiedLabel = asmgen.makeLabel("for_modified")
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asmgen.out("""
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lda #<$iterableName
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@ -294,14 +287,14 @@ $modifiedLabel lda ${65535.toHex()},y ; modified""")
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iny
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cpy #${length and 255}
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beq $endLabel
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jmp $loopLabel
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bne $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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}
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DataType.ARRAY_W, DataType.ARRAY_UW -> {
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// TODO: optimize loop code when the length of the array is < 256
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// TODO: optimize loop code when the length of the array is < 256 (i.e. always)
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val length = decl.arraysize!!.size()!! * 2
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val counterLabel = asmgen.makeLabel("for_counter")
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val counterLabel = asmgen.makeLabel("for_counter") // todo allocate dynamically, zero page preferred if iterations >= 8
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val modifiedLabel = asmgen.makeLabel("for_modified")
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val modifiedLabel2 = asmgen.makeLabel("for_modified2")
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val loopvarName = asmgen.asmIdentifierName(stmt.loopVar)
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@ -327,7 +320,7 @@ $modifiedLabel2 lda ${65535.toHex()},y ; modified
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iny
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cpy #${length and 255}
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beq $endLabel
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jmp $loopLabel
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bne $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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}
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@ -343,179 +336,117 @@ $endLabel""")
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if (range.isEmpty() || range.step==0)
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throw AssemblyError("empty range or step 0")
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if(iterableDt==DataType.ARRAY_B || iterableDt==DataType.ARRAY_UB) {
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if(range.step==1 && range.first>=0 && range.last <= 255 && range.last>range.first) return translateForSimpleByteRangeAsc(stmt, range)
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if(range.step==-1 && range.first<=255 && range.first >=0 && range.last<range.first) return translateForSimpleByteRangeDesc(stmt, range)
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if(range.step==1 && range.last>range.first) return translateForSimpleByteRangeAsc(stmt, range)
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if(range.step==-1 && range.last<range.first) return translateForSimpleByteRangeDesc(stmt, range)
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}
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if(iterableDt==DataType.ARRAY_W || iterableDt==DataType.ARRAY_UW) {
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if(range.step==1 && range.first>=0 && range.last <= 255 && range.last>range.first) return translateForSimpleWordRange255Asc(stmt, range)
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if(range.step==-1 && range.first<=255 && range.first >=0 && range.last<range.first) return translateForSimpleWordRange255Desc(stmt, range)
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if(range.step==1 && range.first>=0 && range.last <= 65535 && range.last>range.first) return translateForSimpleWordRange65535Asc(stmt, range)
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if(range.step==-1 && range.first<=65535 && range.first >=0 && range.last<range.first) return translateForSimpleWordRange65535Desc(stmt, range)
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else if(iterableDt==DataType.ARRAY_W || iterableDt==DataType.ARRAY_UW) {
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if(range.step==1 && range.last>range.first) return translateForSimpleWordRangeAsc(stmt, range)
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if(range.step==-1 && range.last<range.first) return translateForSimpleWordRangeDesc(stmt, range)
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}
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// not one of the easy cases, generate more complex code...
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val loopLabel = asmgen.makeLabel("for_loop")
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val endLabel = asmgen.makeLabel("for_end")
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asmgen.loopEndLabels.push(endLabel)
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// TODO more optimized code possible now that continue is gone?
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when(iterableDt) {
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DataType.ARRAY_B, DataType.ARRAY_UB -> {
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// loop over byte range via loopvar, step > 1 or < -1
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val counterLabel = asmgen.makeLabel("for_counter")
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// loop over byte range via loopvar, step >= 2 or <= -2
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val varname = asmgen.asmIdentifierName(stmt.loopVar)
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when {
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range.step==1 || range.step==-1 -> {
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throw AssemblyError("step 1 and -1 should have been handled specifically")
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}
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range.step >= 2 -> {
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// step >= 2
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asmgen.out("""
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lda #${(range.last-range.first) / range.step + 1}
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sta $counterLabel
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lda #${range.first}
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sta $varname
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asmgen.out("""
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lda #${range.first}
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sta $varname
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$loopLabel""")
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asmgen.translate(stmt.body)
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asmgen.out("""
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dec $counterLabel
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beq $endLabel
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lda $varname
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clc
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adc #${range.step}
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sta $varname
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jmp $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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asmgen.translate(stmt.body)
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when (range.step) {
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0, 1, -1 -> {
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throw AssemblyError("step 0, 1 and -1 should have been handled specifically $stmt")
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}
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2 -> {
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if(range.last==255) {
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asmgen.out("""
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inc $varname
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beq $endLabel
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inc $varname
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bne $loopLabel""")
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} else {
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asmgen.out("""
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lda $varname
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cmp #${range.last}
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beq $endLabel
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inc $varname
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inc $varname
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jmp $loopLabel""")
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}
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}
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-2 -> {
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when (range.last) {
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0 -> asmgen.out("""
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lda $varname
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beq $endLabel
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dec $varname
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dec $varname
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jmp $loopLabel""")
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1 -> asmgen.out("""
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dec $varname
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beq $endLabel
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dec $varname
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bne $loopLabel""")
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else -> asmgen.out("""
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lda $varname
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cmp #${range.last}
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beq $endLabel
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dec $varname
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dec $varname
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jmp $loopLabel""")
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}
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}
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else -> {
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// step <= -2
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// step <= -3 or >= 3
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asmgen.out("""
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lda #${(range.first-range.last) / range.step.absoluteValue + 1}
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sta $counterLabel
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lda #${range.first}
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sta $varname
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$loopLabel""")
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asmgen.translate(stmt.body)
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asmgen.out("""
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dec $counterLabel
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beq $endLabel
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lda $varname
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sec
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sbc #${range.step.absoluteValue}
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sta $varname
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jmp $loopLabel
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$counterLabel .byte 0
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$endLabel""")
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lda $varname
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cmp #${range.last}
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beq $endLabel
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clc
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adc #${range.step}
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sta $varname
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jmp $loopLabel""")
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}
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}
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asmgen.out(endLabel)
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}
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DataType.ARRAY_W, DataType.ARRAY_UW -> {
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// loop over word range via loopvar, step > 1 or < -1
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// loop over word range via loopvar, step >= 2 or <= -2
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val varname = asmgen.asmIdentifierName(stmt.loopVar)
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when {
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range.step==1 || range.step==-1 -> {
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throw AssemblyError("step 1 and -1 should have been handled specifically")
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}
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// range.step == 1 -> {
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// // word, step = 1
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// val lastValue = range.last+1
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// asmgen.out("""
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// lda #<${range.first}
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// ldy #>${range.first}
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// sta $varname
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// sty $varname+1
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//$loopLabel""")
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// asmgen.translate(stmt.body)
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// asmgen.out("""
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// inc $varname
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// bne +
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// inc $varname+1
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//+ lda $varname
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// cmp #<$lastValue
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// bne +
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// lda $varname+1
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// cmp #>$lastValue
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// beq $endLabel
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//+ jmp $loopLabel
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//$endLabel""")
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// }
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// range.step == -1 -> {
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// // word, step = 1
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// val lastValue = range.last-1
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// asmgen.out("""
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// lda #<${range.first}
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// ldy #>${range.first}
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// sta $varname
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// sty $varname+1
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//$loopLabel""")
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// asmgen.translate(stmt.body)
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// asmgen.out("""
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// lda $varname
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// bne +
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// dec $varname+1
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//+ dec $varname
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// lda $varname
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// cmp #<$lastValue
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// bne +
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// lda $varname+1
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// cmp #>$lastValue
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// beq $endLabel
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//+ jmp $loopLabel
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//$endLabel""")
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// }
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range.step >= 2 -> {
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// word, step >= 2
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// note: range.last has already been adjusted by kotlin itself to actually be the last value of the sequence
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val lastValue = range.last+range.step
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asmgen.out("""
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lda #<${range.first}
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ldy #>${range.first}
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sta $varname
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sty $varname+1
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$loopLabel""")
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asmgen.translate(stmt.body)
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asmgen.out("""
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clc
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lda $varname
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adc #<${range.step}
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sta $varname
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lda $varname+1
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adc #>${range.step}
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sta $varname+1
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lda $varname
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cmp #<$lastValue
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bne +
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lda $varname+1
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cmp #>$lastValue
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beq $endLabel
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+ jmp $loopLabel
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$endLabel""")
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when (range.step) {
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0, 1, -1 -> {
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throw AssemblyError("step 0, 1 and -1 should have been handled specifically $stmt")
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}
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else -> {
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// step <= -2
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// word, step >= 2 or <= -2
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// note: range.last has already been adjusted by kotlin itself to actually be the last value of the sequence
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val lastValue = range.last+range.step
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asmgen.out("""
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lda #<${range.first}
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ldy #>${range.first}
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sta $varname
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sty $varname+1
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lda #<${range.first}
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ldy #>${range.first}
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sta $varname
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sty $varname+1
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$loopLabel""")
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asmgen.translate(stmt.body)
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asmgen.out("""
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sec
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lda $varname
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sbc #<${range.step.absoluteValue}
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sta $varname
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lda $varname+1
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sbc #>${range.step.absoluteValue}
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sta $varname+1
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lda $varname
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cmp #<$lastValue
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bne +
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lda $varname+1
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cmp #>$lastValue
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beq $endLabel
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+ jmp $loopLabel
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lda $varname
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cmp #<${range.last}
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bne +
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lda $varname+1
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cmp #>${range.last}
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bne +
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beq $endLabel
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+ lda $varname
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clc
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adc #<${range.step}
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sta $varname
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lda $varname+1
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adc #>${range.step}
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sta $varname+1
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jmp $loopLabel
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$endLabel""")
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}
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}
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@ -530,28 +461,23 @@ $endLabel""")
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val endLabel = asmgen.makeLabel("for_end")
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asmgen.loopEndLabels.push(endLabel)
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val varname = asmgen.asmIdentifierName(stmt.loopVar)
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if (range.last == 255) {
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asmgen.out("""
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asmgen.out("""
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lda #${range.first}
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sta $varname
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$loopLabel""")
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asmgen.translate(stmt.body)
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asmgen.translate(stmt.body)
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if (range.last == 255) {
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asmgen.out("""
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inc $varname
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bne $loopLabel
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$endLabel""")
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} else {
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asmgen.out("""
|
||||
lda #${range.first}
|
||||
sta $varname
|
||||
$loopLabel""")
|
||||
asmgen.translate(stmt.body)
|
||||
asmgen.out("""
|
||||
lda $varname
|
||||
cmp #${range.last}
|
||||
beq $endLabel
|
||||
inc $varname
|
||||
bne $loopLabel
|
||||
jmp $loopLabel
|
||||
$endLabel""")
|
||||
}
|
||||
asmgen.loopEndLabels.pop()
|
||||
@ -562,13 +488,13 @@ $endLabel""")
|
||||
val endLabel = asmgen.makeLabel("for_end")
|
||||
asmgen.loopEndLabels.push(endLabel)
|
||||
val varname = asmgen.asmIdentifierName(stmt.loopVar)
|
||||
when (range.last) {
|
||||
0 -> {
|
||||
asmgen.out("""
|
||||
asmgen.out("""
|
||||
lda #${range.first}
|
||||
sta $varname
|
||||
$loopLabel""")
|
||||
asmgen.translate(stmt.body)
|
||||
asmgen.translate(stmt.body)
|
||||
when (range.last) {
|
||||
0 -> {
|
||||
asmgen.out("""
|
||||
lda $varname
|
||||
beq $endLabel
|
||||
@ -577,48 +503,78 @@ $loopLabel""")
|
||||
$endLabel""")
|
||||
}
|
||||
1 -> {
|
||||
asmgen.out("""
|
||||
lda #${range.first}
|
||||
sta $varname
|
||||
$loopLabel""")
|
||||
asmgen.translate(stmt.body)
|
||||
asmgen.out("""
|
||||
dec $varname
|
||||
bne $loopLabel
|
||||
jmp $loopLabel
|
||||
$endLabel""")
|
||||
}
|
||||
else -> {
|
||||
asmgen.out("""
|
||||
lda #${range.first}
|
||||
sta $varname
|
||||
$loopLabel""")
|
||||
asmgen.translate(stmt.body)
|
||||
asmgen.out("""
|
||||
lda $varname
|
||||
cmp #${range.last}
|
||||
beq $endLabel
|
||||
dec $varname
|
||||
bne $loopLabel
|
||||
jmp $loopLabel
|
||||
$endLabel""")
|
||||
}
|
||||
}
|
||||
asmgen.loopEndLabels.pop()
|
||||
}
|
||||
|
||||
private fun translateForSimpleWordRange255Asc(stmt: ForLoop, range: IntProgression) {
|
||||
TODO("Not yet implemented")
|
||||
private fun translateForSimpleWordRangeAsc(stmt: ForLoop, range: IntProgression) {
|
||||
val loopLabel = asmgen.makeLabel("for_loop")
|
||||
val endLabel = asmgen.makeLabel("for_end")
|
||||
asmgen.loopEndLabels.push(endLabel)
|
||||
val varname = asmgen.asmIdentifierName(stmt.loopVar)
|
||||
asmgen.out("""
|
||||
lda #<${range.first}
|
||||
ldy #>${range.first}
|
||||
sta $varname
|
||||
sty $varname+1
|
||||
$loopLabel""")
|
||||
asmgen.translate(stmt.body)
|
||||
asmgen.out("""
|
||||
lda $varname
|
||||
cmp #<${range.last}
|
||||
bne +
|
||||
lda $varname+1
|
||||
cmp #>${range.last}
|
||||
bne +
|
||||
beq $endLabel
|
||||
+ inc $varname
|
||||
bne $loopLabel
|
||||
inc $varname+1
|
||||
jmp $loopLabel
|
||||
$endLabel""")
|
||||
asmgen.loopEndLabels.pop()
|
||||
}
|
||||
|
||||
private fun translateForSimpleWordRange255Desc(stmt: ForLoop, range: IntProgression) {
|
||||
TODO("Not yet implemented")
|
||||
private fun translateForSimpleWordRangeDesc(stmt: ForLoop, range: IntProgression) {
|
||||
val loopLabel = asmgen.makeLabel("for_loop")
|
||||
val endLabel = asmgen.makeLabel("for_end")
|
||||
asmgen.loopEndLabels.push(endLabel)
|
||||
val varname = asmgen.asmIdentifierName(stmt.loopVar)
|
||||
asmgen.out("""
|
||||
lda #<${range.first}
|
||||
ldy #>${range.first}
|
||||
sta $varname
|
||||
sty $varname+1
|
||||
$loopLabel""")
|
||||
asmgen.translate(stmt.body)
|
||||
asmgen.out("""
|
||||
lda $varname
|
||||
cmp #<${range.last}
|
||||
bne +
|
||||
lda $varname+1
|
||||
cmp #>${range.last}
|
||||
bne +
|
||||
beq $endLabel
|
||||
+ lda $varname
|
||||
bne +
|
||||
dec $varname+1
|
||||
+ dec $varname
|
||||
jmp $loopLabel
|
||||
$endLabel""")
|
||||
asmgen.loopEndLabels.pop()
|
||||
}
|
||||
|
||||
private fun translateForSimpleWordRange65535Asc(stmt: ForLoop, range: IntProgression) {
|
||||
TODO("Not yet implemented")
|
||||
}
|
||||
|
||||
private fun translateForSimpleWordRange65535Desc(stmt: ForLoop, range: IntProgression) {
|
||||
TODO("Not yet implemented")
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
@ -6,93 +6,82 @@
|
||||
main {
|
||||
|
||||
sub start() {
|
||||
ubyte counterb
|
||||
uword counterw
|
||||
byte counterb
|
||||
word counterw
|
||||
|
||||
|
||||
for counterb in 0 to 10 {
|
||||
c64scr.print_ub(counterb)
|
||||
for counterb in -10 to 11 {
|
||||
c64scr.print_b(counterb)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for counterb in 10 to 30 {
|
||||
c64scr.print_ub(counterb)
|
||||
for counterb in 11 to -10 step -1 {
|
||||
c64scr.print_b(counterb)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for counterb in 250 to 255 {
|
||||
c64scr.print_ub(counterb)
|
||||
for counterb in -10 to 11 step 2 {
|
||||
c64scr.print_b(counterb)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for counterb in 10 to 0 step -1 {
|
||||
c64scr.print_ub(counterb)
|
||||
for counterb in 11 to -10 step -2 {
|
||||
c64scr.print_b(counterb)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for counterb in 10 to 1 step -1 {
|
||||
c64scr.print_ub(counterb)
|
||||
for counterb in -10 to 11 step 3 {
|
||||
c64scr.print_b(counterb)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for counterb in 30 to 10 step -1 {
|
||||
c64scr.print_ub(counterb)
|
||||
for counterb in 11 to -10 step -3 {
|
||||
c64scr.print_b(counterb)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
c64.CHROUT('\n')
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for counterw in -10 to 11 {
|
||||
c64scr.print_w(counterw)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for counterb in 255 to 250 step -1 {
|
||||
c64scr.print_ub(counterb)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for counterw in 0 to 10 {
|
||||
c64scr.print_uw(counterw)
|
||||
for counterw in 11 to -10 step -1 {
|
||||
c64scr.print_w(counterw)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for counterw in 10 to 30 {
|
||||
c64scr.print_uw(counterw)
|
||||
for counterw in -10 to 11 step 2 {
|
||||
c64scr.print_w(counterw)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for counterw in 250 to 255 {
|
||||
c64scr.print_uw(counterw)
|
||||
for counterw in 11 to -10 step -2 {
|
||||
c64scr.print_w(counterw)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for counterw in 10 to 0 step -1 {
|
||||
c64scr.print_uw(counterw)
|
||||
for counterw in -10 to 11 step 3 {
|
||||
c64scr.print_w(counterw)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for counterw in 10 to 1 step -1 {
|
||||
c64scr.print_uw(counterw)
|
||||
for counterw in 11 to -10 step -3 {
|
||||
c64scr.print_w(counterw)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for counterw in 30 to 10 step -1 {
|
||||
c64scr.print_uw(counterw)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
|
||||
for counterw in 255 to 250 step -1 {
|
||||
c64scr.print_uw(counterw)
|
||||
c64.CHROUT(',')
|
||||
}
|
||||
c64.CHROUT('\n')
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user