6502/6502-QR-code-generator
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amoved single mask option to common code

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thrust26 2021-04-15 20:16:31 +02:00
parent 41b11a9ae8
commit dde07790ba
3 changed files with 25 additions and 23 deletions
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9
QRCodeGen.inc
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@ -7,6 +7,9 @@ QR_VERSION = 2 ; 1..3, QR code size (21, 25, 29)
ENDIF
IFNCONST QR_LEVEL
QR_LEVEL = 0 ; 0..4, error correction levels L, M, Q, H
ENDIF
IFNCONST QR_SINGLE_MASK
QR_SINGLE_MASK = 0 ; 0|1, use only 1 of the 8 mask pattern
ENDIF
IFNCONST QR_PADDING
QR_PADDING = 1 ; 0|1, add padding bytes add the end of test message text
@ -671,7 +674,11 @@ DrawPattern SUBROUTINE
.loopFormat
sty .idx
cpy #8
IF QR_SINGLE_MASK
ldx #0
ELSE
ldx qrPattern
ENDIF
lda FormatLo,x
and BitMask,y
bcc .lowFormat
@ -838,7 +845,7 @@ PatternWidth
.byte 1 ; left, vertical timing line
.byte 9, 9, 8 ; eye pattern
.byte 4, 1 ; alignment pattern (right/middle part)
.byte QR_SIZE - 9 - 8 ; top, horizontal timing line
; .byte QR_SIZE - 9 - 8 ; top, horizontal timing line
PatternHeight
.byte QR_SIZE - 9 - 8 ; left, vertical timing line
.byte 9, 8, 9 ; eye pattern

22
QRCodeGenDemo.asm
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@ -1,4 +1,4 @@
; QR Code generator demo V0.4
; QR Code generator demo V0.5
; (C) 2021 Thomas Jentzsch
; TODOs
@ -40,16 +40,16 @@ ATARI_2600 = 1 ; enable for Atari 2600 specific code
; QR Code Generator Switches
QR_VERSION = 2 ; 1, 2 or 3 (TODO 1 and 3)
QR_LEVEL = 1 ; 0 (L), 1 (M), 2 (Q) and 3 (H))
QR_SINGLE_MASK = 0 ; (-255 bytes) use only the 1st of the 8 mask pattern
QR_PADDING = 1 ; (+ 22 bytes) add padding bytes (optional)
QR_GENERATE = 0 ; (+~12 bytes) generates Reed-Solomon ECC generator polynomial on-the-fly
; else uses built-in table
QR_GENERATE = 0 ; (+~12 bytes) generate Reed-Solomon ECC generator polynomial on-the-fly
; else use built-in table
; Atari 2600 specific QR settings (keep set to 0 for other platforms!)
IFCONST ATARI_2600
QR_OVERLAP = 1 ; overlaps input and output data to save RAM (defined for version 2 only!)
QR_SINGLE_MASK = 0 ; (-255 bytes) if 1 uses only 1 of the 8 mask pattern
QR_DIRECT_DRAW = 0 ; (+ 45 bytes) draw byte columns instead of individual pixel
QR_SPRITE_GFX = 0 ; display playfield or sprite graphics
QR_SPRITE_GFX = 1 ; display playfield or sprite graphics
ENDIF
IF QR_VERSION != 2
@ -58,13 +58,6 @@ QR_SPRITE_GFX = 0 ; display playfield or sprite graphics
ERR
ENDIF
IF QR_SINGLE_MASK = 1 && QR_DIRECT_DRAW = 0
ECHO ""
ECHO "*** ERROR: Unsupported assembler switches combination! ***"
ERR
ENDIF
;===============================================================================
; C O N S T A N T S
;===============================================================================
@ -631,11 +624,12 @@ _QR_TOTAL SET _QR_TOTAL + . - MessageCode
IF QR_SPRITE_GFX = 0
; rearrange bitmap data for PF display
; | P0L | P1 | P0R |
; X|XXXXXXXX|XXXXXXXX|XXXXXXXX|
; |PF0 | PF1 | PF2 |PF0 | PF1 | PF2 |
; | |7......0|0......7|4..7|7......0| |
; |....|...XXXXX|XXXXXXXX|XXXX|XXXXXXXX|........|
; | P0L | P1 | P0R |
; 0|abcdefgh|ijklmnop|qrstuvwx| ->
; -> 0|ponmabcd|lkjihgfe|qrstuvwx|
.tmpLeft = qrTmpVars
ldx #QR_SIZE-1

1
instructions.txt
View File

@ -7,6 +7,7 @@ Instructions:
2. Define the following constants:
- QR_VERSION = 1..3 ; QR code size (21, 25, 29)
- QR_LEVEL = 0..3 ; error correction levels L, M, Q, H
- QR_SINGLE_MASK = 0|1 ; use only the 1st of the 8 mask pattern
- QR_PADDING = 0|1 ; add padding bytes add the end of test message text
- QR_GENERATE = 0|1 ; generate Reed-Solomon ECC generator polynomial on-the-fly
; else use built-in table