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Copy pathHelloW
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HelloW
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; s.HelloW
;
; headers
GET ^.AsmHdrs.h.SWINames
; macro
MACRO
$label ADDL $reg, $var
LCLA count
LCLA varcopy
LCLA value
varcopy SETA $var
count SETA 0
WHILE varcopy > 0
[ varcopy :AND: 3 = 0
varcopy SETA varcopy :SHR: 2
count SETA count + 2
|
value SETA (varcopy :AND: 255) :SHL: (count)
ADD $reg, $reg, #&$value
varcopy SETA varcopy :SHR: 8
count SETA count + 8
]
WEND
MEND
MACRO
$label ADDR $reg, $dest, $cond
$label ADR$cond.L $reg, $dest
MEND
GBLA addr_verbose
addr_verbose SETA 0
MACRO
$label addr $reg, $object, $cc
LCLA value
value SETA .-$object+8
Immediate &$value
[ immediate
$label ADR$cc $reg, $object
[ addr_verbose :AND: 1 <> 0
! 0,"addr saved a word"
]
|
$label ADR$cc.L $reg, $object
[ addr_verbose :AND: 2 <> 0
! 0,"addr didn't save a word"
]
]
MEND
MACRO
$label DEC $reg,$by
[ "$by" = ""
$label SUB $reg,$reg,#1
|
$label SUB $reg,$reg,#$by
]
MEND
MACRO
$label DivRem $rc, $ra, $rb, $rtemp, $norem
$label
[ NoARMVE
MOV $rtemp, $rb
CMP $rtemp, $ra, LSR #1
01
MOVLS $rtemp, $rtemp, LSL #1
CMPLS $rtemp, $ra, LSR #1
BLS %BT01
MOV $rc, #0
02
CMP $ra, $rtemp
SUBCS $ra, $ra, $rtemp
ADC $rc, $rc, $rc
MOV $rtemp, $rtemp, LSR #1
CMP $rtemp, $rb
BCS %BT02
ELIF ("$rb" :LEFT: 1) == "#"
MOV $rtemp, $rb
UDIV $rc, $ra, $rtemp
[ "$norem" == ""
MLS $ra, $rtemp, $rc, $ra
]
|
UDIV $rc, $ra, $rb
[ "$norem" == ""
MLS $ra, $rb, $rc, $ra
]
]
MEND
MACRO
$label Error $errno, $errstr
$label ADR R0, %FT01
SWI OS_GenerateError
01
& $errno
= "$errstr", 0
ALIGN
MEND
MACRO
$label INC $reg,$by
[ "$by" = ""
$label ADD $reg,$reg,#1
|
$label ADD $reg,$reg,#$by
]
MEND
MACRO
$label MULTIPLY $rc, $ra, $rb
$label MUL $rc, $rb, $ra
MEND
MACRO
$label Pull $reglist, $cond, $hat
LCLS temps
LCLL onereg
temps SETS "$reglist"
onereg SETL "$hat" = ""
WHILE onereg :LAND: :LEN: temps > 0
[ temps :LEFT: 1 = "," :LOR: temps :LEFT: 1 = "-"
onereg SETL {FALSE}
]
temps SETS temps :RIGHT: (:LEN: temps - 1)
WEND
[ onereg
$label LDR$cond $reglist, [r13], #4
|
$label LDM$cond.FD r13!, {$reglist}$hat
]
MEND
MACRO
$label Push $reglist, $cond
LCLS temps
LCLL onereg
temps SETS "$reglist"
onereg SETL {TRUE}
WHILE onereg :LAND: :LEN: temps > 0
[ temps :LEFT: 1 = "," :LOR: temps :LEFT: 1 = "-"
onereg SETL {FALSE}
]
temps SETS temps :RIGHT: (:LEN: temps - 1)
WEND
[ onereg
$label STR$cond $reglist, [r13, #-4]!
|
$label STM$cond.FD r13!, {$reglist}
]
MEND
MACRO
$label Swap $ra, $rb, $cc
$label EOR$cc $ra, $ra, $rb
EOR$cc $rb, $ra, $rb
EOR$cc $ra, $ra, $rb
MEND
; constants
; window flags
WF_Movable EQU &2
WF_WimpRedraws EQU &10
WF_Pane EQU &20
WF_Outside EQU &40
WF_NoBackClose EQU &80
WF_ScrollReqAR EQU &100
WF_ScrollReq EQU &200
WF_GCOLours EQU &400
WF_NoBelow EQU &800
WF_HotKeys EQU &1000
WF_StayOnScreen EQU &2000
WF_IgnoreR EQU &4000
WF_IgnoreL EQU &8000
WF_OpenQ EQU &10000
WF_OnTopQ EQU &20000
WF_FullSizeQ EQU &40000
WF_ToggleSizeQ EQU &80000
WF_InputFocusQ EQU &100000
WF_ForceOnScreenQ EQU &200000
WF_BackIcon EQU &81000000
WF_CloseIcon EQU &82000000
WF_TitleBar EQU &84000000
WF_ToggleSizeIcon EQU &88000000
WF_VScrollBar EQU &90000000
WF_AdjSizeIcon EQU &a0000000
WF_HScrollBar EQU &c0000000
WFLAG EQU WF_Movable :OR: WF_ScrollReqAR :OR: WF_IgnoreR :OR: WF_IgnoreL :OR: WF_BackIcon :OR: WF_CloseIcon :OR: WF_VScrollBar :OR: WF_AdjSizeIcon :OR: WF_HScrollBar :OR: WF_ToggleSizeIcon :OR: WF_TitleBar
; windowblock offsets
;
wminx EQU 0
wminy EQU 4
wmaxx EQU 8
wmaxy EQU 12
xscrl EQU 16
yscrl EQU 20
bhind EQU 24
wflags EQU 28
tfg EQU 32
tbg EQU 33
wafg EQU 34
wabg EQU 35
sboc EQU 36
sbic EQU 37
tbgf EQU 28
extra EQU 39
waminy EQU 40
waminx EQU 44
wamaxx EQU 48
wamaxy EQU 52
tbflags EQU 56
wbtype EQU 60
sablock EQU 64
minw EQU 68
minh EQU 70
title EQU 72
numcons EQU 84
icon0 EQU 88
; characters
;
TAB * 9
CR * 13
LF * 10
HSP * 31 ; hard space
Esc * 27
AREA |data|, DATA, READWRITE
ALIGN 256
task DCB "TASK"
name DCB "A Wimp TASK", 0
DCD 0
; filter wimp messages
;
wanted DCB 1,2,3,4,5,6,7,8,9,10,11,12,17,18,19,0
mask DCD 2_11100000110001
ALIGN 256
hello DCB "Hello, the quick brown fox .. "
DCB "Jumped over the Lazy Dog .. "
DCB "This is the age of the train!"
DCB " A Snafu.", 0
ALIGN
clickit
DCB "Clicked ", 0
ALIGN
bye DCB "Bye",0
ALIGN
ureq DCB "User Request message",0
ALIGN
prebye DCB "Ready to quit?",0
ALIGN
bytes DCB " Bytes available", 0
ALIGN
m1 DCB "PAGE# ", 0
ALIGN
m2 DCB " LINE# ", 0
ALIGN
m3 DCB " COL# ", 0
ALIGN
m4 DCB " Polls: ", 0
ALIGN
m6 DCB " Polls: ", 0
ALIGN
minver DCD 310 ; required os version
; variables
osver DCD 0 ; our OS version
thndl DCD 0 ; our Wimp task Handle
ramlim DCD 0 ; end of our memory
send DCD 0 ; end of scratch
ALIGN 256
evtcd DCD 0 ; event code
hwnd DCD 0 ; some useful poll values
pollwd DCD 0 ; poll word
sender DCD 0 ; Sender handle
fini DCD 0 ; finished?
action DCD 0 ; poll action
trips DCD 0 ; messages polled.
minxy
minx DCD 0
miny DCD 0
ALIGN 256
; sprite control
;
sprname DCB "offscn", 0, 0
sprtptr
DCD 0
sprx DCD 800
spry DCD 600
sprdir DCD 0
sprcoord
DCD 0
DCD -32
; initial settings used to create/open our window.
;
whwnd DCD 0
winsetting ; used to open window.
wincoords
DCD 100, 100, 1636, 1120 ; minx, miny, maxx, maxy
winscroll
DCD 0, 8 ; scroll
winbehind
DCD -1 ; behind
winflags
DCD WFLAG ; &FF00C152
wincols ; colours
DCB 7, 2, 1, &FF ; we draw background.
DCB 3, 1, 12, 0
winwa ; work area
DCD 0,0,1532,1020
DCD &3D ; tiflags
DCD BT_ClickAR ; wbtype
DCD 1 ; sprite area 1=wimp
DCW 1532, 1020 ; min size (words)
wintitle
DCB "My Window",0,0,0,0,0,0
ALIGN
winicons
DCD 0
SPACE 512
; button constants
;
BT_Ignore EQU &0000
BT_Over EQU &1000
BT_ClickAR EQU &2000
BT_Click EQU &3000
BT_Release EQU &4000
BT_2Click EQU &5000
BT_ClickDrag EQU &6000
BT_ReleaseDrag EQU &7000
BT_2ClickDrag EQU &8000
BT_OverClick EQU &9000
BT_1Drag2 EQU &a000
BT_1Drag EQU &b000
BT_CaretDrag EQU &e000
BT_Caret EQU &f000
; offsets
wherex EQU 0
wherey EQU 4
whereb EQU 8
whereh EQU 12
wherei EQU 16
wheresz EQU 24
; -- Memory Map ----------------------------------
slot EQU 8388606
topmem EQU 8388606
sbase EQU 4177920
sasize EQU 3500000
sp0 EQU sbase - 1024
where EQU sp0 - 16384
sprsav EQU where - 512
scratch EQU sprsav - 512
; -- --------------------------------------------
updt EQU scratch - 512
updt_hndl EQU updt + 0
updt_x EQU updt + 4
updt_y EQU updt + 8
updt_xx EQU updt + 12
updt_xy EQU updt + 16
updt_sx EQU updt + 20
updt_sy EQU updt + 24
updt_rx EQU updt + 28
updt_ry EQU updt + 32
updt_rxx EQU updt + 36
updt_rxy EQU updt + 40
; -- Poll ---------------------------------------
pollbase EQU updt - 512
poll EQU pollbase
; -- Colours
cpaper EQU &00FFFF
cpen EQU &FF3333
ccur1 EQU &FFFF00
ccur2 EQU &FFFF00
cbase EQU pollbase - 512
colours EQU cbase
fgcol EQU cbase + 0
bgcol EQU cbase + 4
c1col EQU cbase + 8
c2col EQU cbase + 12
; -- Text Pages
; 60 page text editor for text overlay.
textpgs EQU 60
textsz EQU 2728 + 88
textvars EQU cbase - 512
cursor EQU textvars
curx EQU textvars
cury EQU textvars + 4
textpg EQU textvars + 8
textpad EQU textvars + 32
pageptr EQU textvars + 36
pageptr0 EQU pageptr + 4
texttop EQU textvars - 1024
textpg0 EQU texttop - textsz
textpg1 EQU textpg0 - textsz
textpg2 EQU textpg1 - textsz
textpg3 EQU textpg2 - textsz
textpg4 EQU textpg3 - textsz
textpg5 EQU textpg4 - textsz
textpg6 EQU textpg5 - textsz
textpg7 EQU textpg6 - textsz
textpg8 EQU textpg7 - textsz
textpg9 EQU textpg8 - textsz
textpg10 EQU textpg9 - textsz
textpg11 EQU textpg10 - textsz
textpg12 EQU textpg11 - textsz
textpg13 EQU textpg12 - textsz
textpg14 EQU textpg13 - textsz
textpg15 EQU textpg14 - textsz
textpg16 EQU textpg15 - textsz
textpg17 EQU textpg16 - textsz
textpg18 EQU textpg17 - textsz
textpg19 EQU textpg18 - textsz
textpg20 EQU textpg19 - textsz
textpg21 EQU textpg20 - textsz
textpg22 EQU textpg21 - textsz
textpg23 EQU textpg22 - textsz
textpg24 EQU textpg23 - textsz
textpg25 EQU textpg24 - textsz
textpg26 EQU textpg25 - textsz
textpg27 EQU textpg26 - textsz
textpg28 EQU textpg27 - textsz
textpg29 EQU textpg28 - textsz
textpg30 EQU textpg29 - textsz
textpg31 EQU textpg30 - textsz
textpg32 EQU textpg31 - textsz
textpg33 EQU textpg32 - textsz
textpg34 EQU textpg33 - textsz
textpg35 EQU textpg34 - textsz
textpg36 EQU textpg35 - textsz
textpg37 EQU textpg36 - textsz
textpg38 EQU textpg37 - textsz
textpg39 EQU textpg38 - textsz
textpg40 EQU textpg39 - textsz
textpg41 EQU textpg40 - textsz
textpg42 EQU textpg41 - textsz
textpg43 EQU textpg42 - textsz
textpg44 EQU textpg43 - textsz
textpg45 EQU textpg44 - textsz
textpg46 EQU textpg45 - textsz
textpg47 EQU textpg46 - textsz
textpg48 EQU textpg47 - textsz
textpg49 EQU textpg48 - textsz
textpg50 EQU textpg49 - textsz
textpg51 EQU textpg50 - textsz
textpg52 EQU textpg51 - textsz
textpg53 EQU textpg52 - textsz
textpg54 EQU textpg53 - textsz
textpg55 EQU textpg54 - textsz
textpg56 EQU textpg55 - textsz
textpg57 EQU textpg56 - textsz
textpg58 EQU textpg57 - textsz
textpg59 EQU textpg58 - textsz
textpg60 EQU textpg59 - textsz
textbase EQU textpg60 - textsz
; -- Keyboard input
kbdbase EQU textbase - 512
khdl EQU kbdbase + 0
kiconhdl EQU kbdbase + 4
kxcaret EQU kbdbase + 8
kycaret EQU kbdbase + 12
kcgf EQU kbdbase + 16
kcidx EQU kbdbase + 20
kcode EQU kbdbase + 24
; insert/overwrite
insovr EQU kbdbase + 32
; program code
AREA |code|, CODE, READONLY
CODE32
ALIGN 1024
; key pressed
colns EQU 88
rowns EQU 30
pagen EQU 60
blankText ROUT
Push "r0-r5, lr"
LDR r4, =pageptr
LDR r4, [r4]
LDR r5, =textsz
SUB r4, r4, r5
LDR r0, =&20202020
MOV r1, r0
MOV r2, r0
MOV r3, r0
10 STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1} ; 88..
DEC r5, colns
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1} ; 88..
DEC r5, colns
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1} ; 88..
DEC r5, colns
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1} ; 88..
DEC r5, colns
CMP r5, #0
BGT %10
Pull "r0-r5, pc"
blankAllText ROUT
Push "r0-r5, lr"
LDR r4, =textbase
LDR r0, =&20202020
LDR r5, =texttop-(88*4)
MOV r1, r0
MOV r2, r0
MOV r3, r0
10 STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1} ; 88..
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1} ; 88..
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1} ; 88..
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1,r2,r3}
STMIA r4!, {r0,r1} ; 88..
CMP r4, r5
BLT %10
Pull "r0-r5, pc"
;
statusBar
Push "r0-r8, lr"
LDR r1, =&AAAAAA
MOV r0, #0
SWI OS_SetColour
MOV r0, #5
SWI OS_WriteC ; at graphics point
MOV r1, #16
MOV r2, #22
MOV r0, #180
SWI OS_Plot
LDR r2, =cursor
LDMIA r2, {r4, r5, R6}
ADDR r0, m2
SWI OS_Write0
MOV R0, R5
MOV r2, #160
ADDR r1, scratch
SWI OS_ConvertInteger4
ADDR r0, scratch
SWI OS_Write0
MOV r1, #200
MOV r2, #22
MOV r0, #180
SWI OS_Plot
ADDR r0, m3
SWI OS_Write0
MOV R0, R4
MOV r2, #160
ADDR r1, scratch
SWI OS_ConvertInteger4
ADDR r0, scratch
SWI OS_Write0
MOV r1, #400
MOV r2, #22
MOV r0, #180
SWI OS_Plot
ADDR r0, m1
SWI OS_Write0
MOV R0, R6
MOV r2, #160
ADDR r1, scratch
SWI OS_ConvertInteger4
ADDR r0, scratch
SWI OS_Write0
Pull "r0-r8, pc"
; cursor keys move within text
leftArrow
Push "r0-r1, lr"
LDR r1, =cursor
LDR r0, [r1]
CMP r0, #1
SUBGT r0, r0, #1
STRGT r0, [r1]
Pull "r0-r1, pc"
rightArrow
Push "r0-r2, lr"
LDR r1, =cursor
LDR r0, [r1]
MOV r2, #colns
SUB r2, r2, #1
CMP r0, r2
ADDLT r0, r0, #1
STRLT r0, [r1]
Pull "r0-r2, pc"
downArrow
Push "r0-r1, lr"
LDR r1, =cursor
LDR r0, [r1, #4]
CMP r0, #rowns
ADDLT r0, r0, #1
STRLT r0, [r1,#4]
Pull "r0-r1, pc"
upArrow
Push "r0-r1, lr"
LDR r1, =cursor
LDR r0, [r1,#4]
CMP r0, #0
SUBGT r0, r0, #1
STRGT r0, [r1,#4]
Pull "r0-r1, pc"
cpyKeyPress
Push "r0-r9, lr"
LDR r9, =poll
LDR r8, =kbdbase
LDMIA r9, {r0,r1,r2,r3,r4,r5,r6,r7}
STMIA r8, {r0,r1,r2,r3,r4,r5,r6,r7}
Pull "r0-r9, pc"
initPagePtrs
Push "r0,r4, lr"
LDR r4, =pageptr0
LDR r0, =textpg0
STR r0, [r4]
LDR r0, =textpg1
STR r0, [r4, #4]
LDR r0, =textpg2
STR r0, [r4, #8]
LDR r0, =textpg3
STR r0, [r4,#12]
LDR r0, =textpg4
STR r0, [r4,#16]
LDR r0, =textpg5
STR r0, [r4,#20]
LDR r0, =textpg6
STR r0, [r4,#24]
LDR r0, =textpg7
STR r0, [r4,#28]
LDR r0, =textpg8
STR r0, [r4,#32]
LDR r0, =textpg9
STR r0, [r4,#36]
LDR r0, =textpg10
STR r0, [r4,#40]
LDR r0, =textpg11
STR r0, [r4,#44]
LDR r0, =textpg12
STR r0, [r4,#48]
LDR r0, =textpg13
STR r0, [r4,#52]
LDR r0, =textpg14
STR r0, [r4,#56]
LDR r0, =textpg15
STR r0, [r4,#60]
LDR r0, =textpg16
STR r0, [r4,#64]
LDR r0, =textpg17
STR r0, [r4,#68]
LDR r0, =textpg18
STR r0, [r4,#18*4]
LDR r0, =textpg19
STR r0, [r4,#19*4]
LDR r0, =textpg20
STR r0, [r4,#20*4]
LDR r0, =textpg21
STR r0, [r4,#21*4]
LDR r0, =textpg22
STR r0, [r4,#22*4]
LDR r0, =textpg23
STR r0, [r4,#23*4]
LDR r0, =textpg24
STR r0, [r4,#24*4]
LDR r0, =textpg25
STR r0, [r4,#25*4]
LDR r0, =textpg26
STR r0, [r4,#26*4]
LDR r0, =textpg27
STR r0, [r4,#27*4]
LDR r0, =textpg28
STR r0, [r4,#28*4]
LDR r0, =textpg29
STR r0, [r4,#29*4]
LDR r0, =textpg30
STR r0, [r4,#30*4]
LDR r0, =textpg31
STR r0, [r4,#31*4]
LDR r0, =textpg32
STR r0, [r4,#32*4]
LDR r0, =textpg33
STR r0, [r4,#33*4]
LDR r0, =textpg34
STR r0, [r4,#34*4]
LDR r0, =textpg35
STR r0, [r4,#35*4]
LDR r0, =textpg36
STR r0, [r4,#36*4]
LDR r0, =textpg37
STR r0, [r4,#37*4]
LDR r0, =textpg38
STR r0, [r4,#38*4]
LDR r0, =textpg39
STR r0, [r4,#39*4]
LDR r0, =textpg40
STR r0, [r4,#40*4]
LDR r0, =textpg41
STR r0, [r4,#41*4]
LDR r0, =textpg42
STR r0, [r4,#42*4]
LDR r0, =textpg43
STR r0, [r4,#43*4]
LDR r0, =textpg44
STR r0, [r4,#44*4]
LDR r0, =textpg45
STR r0, [r4,#45*4]
LDR r0, =textpg46
STR r0, [r4,#46*4]
LDR r0, =textpg47
STR r0, [r4,#47*4]
LDR r0, =textpg48
STR r0, [r4,#48*4]
LDR r0, =textpg49
STR r0, [r4,#49*4]
LDR r0, =textpg50
STR r0, [r4,#50*4]
LDR r0, =textpg51
STR r0, [r4,#51*4]
LDR r0, =textpg52
STR r0, [r4,#52*4]
LDR r0, =textpg53
STR r0, [r4,#53*4]
LDR r0, =textpg54
STR r0, [r4,#54*4]
LDR r0, =textpg55
STR r0, [r4,#55*4]
LDR r0, =textpg56
STR r0, [r4,#56*4]
LDR r0, =textpg57
STR r0, [r4,#57*4]
LDR r0, =textpg58
STR r0, [r4,#58*4]
LDR r0, =textpg59
STR r0, [r4,#59*4]
LDR r0, =textpg60
STR r0, [r4,#60*4]
MOV r0, #1
LDR r4, =textpg
STR r0, [r4]
Pull "r0,r4,pc"
setPagePtr
Push "r0-r5, lr"
LDR r4, =textpg
LDR r2, [r4]
MOV r3, #4
MUL r5, r2, r3
LDR r4, =pageptr0
LDR r0, [r4,r5]
LDR r5, =pageptr
STR r0, [r5]
Pull "r0-r5,pc"
LTORG
pgupPress
pageUp ROUT
Push "r0-r5, lr"
LDR r4, =textpg
LDR r2, [r4]
CMP r2, #59
Pull "r0-r5,pc", GT
ADD r2, r2, #1
STR r2, [r4]
MOV r3, #4
MUL r5, r2, r3
LDR r4, =pageptr0
LDR r0, [r4,r5]
LDR r5, =pageptr
STR r0, [r5]
BL homeCursor
Pull "r0-r5,pc"
pgdnPress
pageDn
Push "r0-r5, lr"
LDR r4, =textpg
LDR r2, [r4]
CMP r2, #1
Pull "r0-r5,pc", LT
SUB r2, r2, #1
STR r2, [r4]
MOV r3, #4
MUL r5, r2, r3
LDR r4, =pageptr0
;ADD r4, r4, r5
LDR r0, [r4,r5]
LDR r5, =pageptr
STR r0, [r5]
BL homeCursor
Pull "r0-r5,pc"
; assign default colours to fg, bg c1, c2.
initTextCols
Push "r0-r4, lr"
LDR r4, =colours
LDR r0, =cpaper
LDR r1, =cpen
LDR r2, =ccur1
LDR r3, =ccur2
STMIA r4, {r0,r1,r2,r3}
; set insert mode
MOV r0, #1
LDR r2, =insovr
STR r0, [r2]
; SET PG TO 1
MOV r0, #1
LDR r2, =textpg
STR r0, [r2]
; set pageptr
BL setPagePtr
Pull "r0-r4, pc"
; set fg and bg graphics colours
setFgBgCols
Push "r0-r4, lr"
LDR r4, =colours
LDR r1, [r4, #0]
MOV r0, #0
SWI OS_SetColour
LDR r1, [r4, #4]
MOV r0, #16
SWI OS_SetColour
Pull "r0-r4, pc"
setStdCurCol
Push "r0-r2, lr"
LDR r2, =colours
LDR r1, [r2, #8]
MOV r0, #0
Pull "r0-r2, pc"