dos33fsprogs/games/peasant/NOTES

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Memory Map
~~~~~~~~~~
; notes -- VID_LOGO loads title at $9000 - $AFFF
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$00 Zero Page
$01 Stack
$02 Disk Lookup
$03 Disk Lookup, IRQ vectors
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$04-$07 Text/GR page 1 (not used?)
$08-$0B Text/GR page 2. $08=boot, $09-$0A = qboot stage2
$0B-$1F QLOAD disk routines and Mockingboard sound routines here
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$20-$3F HGR Page 1
$40-$5f HGR Page 2
$60-$?? Programs (roughly 22k available?)
$B8-$BB Hi-res lookup tables
$BC-$BF ???
$C0-$CF I/O
$D0-$FF ROM
Disk Map (disk has 35 tracks, each 4k in size)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
T 0 = Qboot
T 1 = QLOAD 4813 bytes 19S = 1T3S
T 3 = VID_LOGO 6911 bytes 27S = 1T11S
T 5 = TITLE 9662 bytes 38S = 2T6S
T 8 = INTRO 16040 bytes 63S = 3T15S
T 12 = COPY_CHECK 4922 bytes 20S = 1T4S
T 14 = PEASANT1 22501 bytes 79S = 4T15S ; 88 is max?
T 19 = PEASANT2 ; 79 = 20224
T 24 = PEASANT3
T 29 = PEASANT4
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238, to 280 (6)
50 to 135 (85) 6*85=510
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280x192
*4
1120x768
Our capture: 300x142 roughly
292x142 to center it
Odd is Orange
Even is blue
EO EO EO EO EO if draw black at odd, nothing
blue 10 10 10 10 10 if draw black at even, two-wide(?) black
10 10 10 10 10 blue
01 01 01 01 01 orange
EO EO
10 01 blue->orange has black gap
01 10 orange->blue has white gap
10 10 01 01 = blue
6|----c>>>-----------c------c-------|
5|-aaa----aaab>>>aaa---a-b-a---------|
46, XRUN=2
46/7= 6R4 ; RUN of 0=1 wide, run of 1=2 wide
start at 4, end at 5
start at 4 (left) = $F0 1111 0000
end at 5 (Right) = $BF 1011 1111
=========
x011 0000
OR them!!!!
left_masks:
.byte $FF,$FE,$FC,$F8, $F0,$E0,$C0
right_masks:
.byte $81,$83,$87, $8F,$9F,$BF,$FF