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Nibble Volume 09, No. 10 (1988-10)(MicroSPARC)(Side B).zip
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FLASH.S
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1996-12-24
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957b
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44 lines
* HI.RES.FLASH Source Code
* By Phil Goetz
* Copyright(c) 1988
* MicroSPARC, Inc.
* Concord, MA 01742
*
* Merlin Pro Assembler
*
ORG $300 ;CAN BE RE-ASSEMBLED ANYWHERE
BASICENT LDY $6 ;MEMORY PAGE LOCATION
MACHENT LDA $E6
STA INVERSE1+2
STA STORE1+2
STA INVERSE2+2
STA STORE2+2
CLC
ADC #$20
STA LIMIT+1
LDA COLEVEN,Y
STA FLASH1+1
LDA COLODD,Y
STA FLASH2+1
LDY #0
FLASH1 LDA #0
INVERSE1 EOR $0000,Y
STORE1 STA $0000,Y
INY
FLASH2 LDA #0
INVERSE2 EOR $0000,Y
STORE2 STA $0000,Y
INY
BNE FLASH1
INC INVERSE1+2
INC STORE1+2
INC INVERSE2+2
INC STORE2+2
LDA INVERSE1+2
LIMIT CMP #0
BNE FLASH1
RTS
COLEVEN DFB $0,$55,$2A,$7F,$80,$D5,$AA,$FF
COLODD DFB $0,$2A,$55,$7F,$80,$AA,$D5,$FF
* END