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;
; VI65 (c) 2010-2013 Soci/Singular (soci@c64.rulez.org)
;
; This program is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with this program; if not, write to the Free Software
; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
;
;h; <html><head><title>VI65 text editor home</title>
;h; <style>img {margin:0.5ex} h1, h3, h4 {font-family:sans-serif;} h1, h3 {font-variant:small-caps} body {width:80ex;font-family:serif}</style>
;h; </head><body>
;h; <h1>VI65 text editor</h1>
;h; <p>A VI implementation for 6502 machines.</p>
;h; <p>This is the "manual" of the multi platform VI65 0.2 editor.</p>
;h; <p>The editor (and the documentation) is far from finished, and there are
;h; a lots of bugs. Maybe the next version will be better ;)</p>
;h; <h3>Supported platforms:</h3>
;h; <p>Commodore 64, 128, 16, Plus 4, VIC20 (expanded), PET 40/80.
;h; Atari 8bit, Apple II.
;h; There's a plugin version for the <a href="http://ide64.org">IDE64</a> filemanager too.</p>
;h; <h3>Supported text modes:</h3>
;h; <ul>
;h; <li>C64 - 40/53/64/80x25 (VDC 80x25 on C128)
;h; <li>C128 - 40/53/64/80x25, VDC 80x25
;h; <li>+4 - 40x25, 53/64/80x23
;h; <li>C16 - 40x25
;h; <li>VIC20 - 22x23, 26/35/40x22
;h; <li>PET - 40/80x25
;h; <li>ATARI - 40/53/64/80x24
;h; <li>APPLE II - 40/46/56/80x24
;h; </ul>
;h; <p>Some text modes use custom 4x8, 5x8 and 6x8 charsets on graphic screen.</p>
;h; <h3>Screenshots:</h3>
;h; <a href="pic/c128vdc.png"><img src="pic/c128vdc.png" width=200 border=0 alt="C128 VDC" align="center" title="C128 in VDC 80x25"></a>
;h; <a href="pic/c64.png"><img src="pic/c64.png" width=200 border=0 alt="C64" align="center" title="C64 in 64x25"></a>
;h; <a href="pic/c16.png"><img src="pic/c16.png" width=200 border=0 alt="C16" align="center" title="C16 in 40x25"></a>
;h; <a href="pic/vic20.png"><img src="pic/vic20.png" width=200 border=0 alt="VIC20" align="center" title="VIC20 in 40x22"></a>
;h; <a href="pic/apple.png"><img src="pic/apple.png" width=200 border=0 alt="APPLE II" align="center" title="Apple II in 80x24"></a>
;h; <a href="pic/atari.png"><img src="pic/atari.png" width=200 border=0 alt="ATARI 800" align="center" title="Atari 800 in 53x24"></a>
;h; <a href="pic/pet.png"><img src="pic/pet.png" width=200 border=0 alt="PET" align="center" title="PET in 80x25"></a>
;h; <a href="pic/plus4.png"><img src="pic/plus4.png" width=200 border=0 alt="+4" align="center" title="Plus4 in 80x23"></a>
;h; <h3>Limitations:</h3>
;h; <ul>
;h; <li>251 characters in a line
;h; <li>65535 lines of text (memory runs out faster...)
;h; <li>65535 maximum count
;h; <li>Platform native text format only
;h; <li>Paste register only limited by the amount of memory
;h; <li>No extra memory support yet
;h; <li>Single buffer editing for now
;h; </ul>
;h; <p>The following key description was mostly copied from the
;h; VIM 7.2 manual.</p>
;t; <h3>Download</h3>
;t; <p><a href="vi65_v0.1.zip">VI65 v0.1</a></p>
;t; <p><a href="vi65_v0.2.zip">VI65 v0.2</a></p>
;t; <p>That's all for now.</p>
;t; <p>VI65 (C) 2010-2011 Soci/Singular <soci at server c64.rulez.org></p>
;t; </body></html>
;m; <h3>Motion keys</h3>
;n; <h3>Normal mode keys</h3>
SIMPLE = 0
BBC = 1
C16 = 16
C64 = 64
C128 = 128
PLUS4 = 4
VIC20 = 20
VIC20BIG = 21
PET80 = 8
PET40 = 7
ATARI800 = 800
APPLE2 = 2
PLUGIN = 65
;TARGET = VIC20BIG
;GFX = 2
loadw .macro
lda #<\1
sta \2
lda #>\1
sta \2+1
.endm
movew .macro
lda \1
sta \2
lda \1+1
sta \2+1
.endm
pha: .macro
lda \@
pha
.endm
pla: .macro
pla
sta \@
.endm
.if TARGET==ATARI800
zpstart = $80
.elsif TARGET==APPLE2
zpstart = $77
.elsif TARGET==BBC
zpstart = 0
.else
zpstart = $11
.fi
.if TARGET==BBC
osrdch = $ffe0
osbyte = $fff4
.fi
.logical zpstart
freehelps .fill 2 ;free memory list
freehelpd .fill 2
freehelp .fill 2
memtop .fill 2
allocline .fill 2
currentline .fill 2
cursorline .fill 2
screen .fill 2
currenttext .fill 2
line .fill 2 ;cursor line
column .fill 1 ;cursor column
line2 .fill 2 ;top line
lines .fill 2 ;number of lines
column2 .fill 1 ;left column
repeat .fill 2
inclusive .fill 1
linewise .fill 1
register .fill 1
error .fill 1
oneless .fill 1
activewin .fill 1
num .fill 3+2
.if (TARGET==BBC)
kbchr .fill 1
.fi
zpend
.here
.if (TARGET==C64) || (TARGET==PLUGIN)
*= $801-2
.if (GFX==1) || (GFX==2) || (GFX==3)
memoryend = $dc00
.else
memoryend = $ff00
.fi
status = $90
time = $a2
keybuffer = 631
keyrepeatdelay = 651
drive = $ba
zpsave = $02c0
.if GFX==0
linebuffer = $ff00
.else
linebuffer = $0400
.fi
virq = $314
kernal .macro
dec $01
.endm
ram .macro
inc $01
.endm
.elsif TARGET==VIC20BIG
*= $1201-2
memoryend = $8000
status = $90
time = $a2
keybuffer = 631
keyrepeatdelay = 651
drive = $ba
linebuffer = $150
virq = $314
kernal .macro
.endm
ram .macro
.endm
.elsif TARGET==VIC20
*= $1001-2
memoryend = $1e00
status = $90
time = $a2
keybuffer = 631
keyrepeatdelay = 651
drive = $ba
linebuffer = $0150
virq = $314
kernal .macro
.endm
ram .macro
.endm
.elsif TARGET==C16
*= $1001-2
memoryend = $4000
status = $90
time = $a5
keybuffer = $527
keyrepeatdelay = 1345
drive = $ae
linebuffer = $065e
virq = $314
kernal .macro
.endm
ram .macro
.endm
.elsif TARGET==PLUS4
*= $1001-2
.if GFX
memoryend = $e000
.else
memoryend = $fd00
.fi
status = $90
time = $a5
keybuffer = $527
keyrepeatdelay = 1345
drive = $ae
linebuffer = $065e
virq = $314
kernal .macro
sta $ff3e
.endm
ram .macro
sta $ff3f
.endm
.elsif (TARGET==PET40) || (TARGET==PET80)
*= $401-2
memoryend = $8000
status = $96
time = $8f
keybuffer = 623
.if TARGET==PET80
keyrepeatdelay = $e5
.elsif TARGET==PET40
keyrepeatdelay = 1002
.fi
drive = $d4
linebuffer = $0150
virq = $90
kernal .macro
.endm
ram .macro
.endm
.elsif TARGET==C128
*= $1c01-2
memoryend = $ff00
status = $90
time = $a2
keybuffer = $34a
keyrepeatdelay = 2595
drive = $ba
linebuffer = $0c00
virq = $314
kernal .macro
sta $ff02
.endm
ram .macro
sta $ff01
.endm
.elsif TARGET==ATARI800
*= $0800-6
memoryend = $bc00
linebuffer = $0600
time = $14
keybuffer = $480-1
virq = $224
kernal .macro
.endm
ram .macro
.endm
.elsif TARGET==APPLE2
*= $0c00-4
memoryend = $bc00
linebuffer = $0900
status = 2
drive = 2
kernal .macro
.endm
ram .macro
.endm
.elsif TARGET==BBC
*= $1300
memoryend = $7a00
linebuffer = $0500
status = 2
drive = 2
kernal .macro
.endm
ram .macro
.endm
.fi
.if TARGET==ATARI800
k_cursorup = 28
k_cursordown = 29
k_cursorleft = 30
k_cursorright = 31
k_del = 126
k_return = 155
k_ins = 255
k_control = -128
.elsif TARGET==APPLE2
k_cursordown = 10
k_cursorup = 11
k_cursorleft = 255
k_cursorright = 21
k_del = 8
k_return = 13
k_ins = 255
k_control = 64
.elsif TARGET==BBC
k_cursordown = 138
k_cursorup = 139
k_cursorleft = 136
k_cursorright = 137
k_del = 127
k_return = 13
k_ins = 255
k_control = 96
.else
k_cursordown = 17
k_cursorup = 145
k_cursorleft = 157
k_cursorright = 29
k_del = 20
k_return = 13
k_ins = 148
k_control = 64
.fi
.if TARGET==PLUGIN
*= $1000-2
.word $1000
rts
rts
rts
jsr $ffbd
jmp start
.elsif TARGET==ATARI800
.word $ffff
.word *+4
.word prgend-1
jmp start
.elsif TARGET==APPLE2
.word *+4
.word prgend-*-2
jmp start
.else
.word *+2
.word ss, 2010
.null $9e,^start
ss .word 0
.fi
.if (TARGET==VIC20BIG) && (GFX!=0)
*= $12a0 ;gfxhez!
.fi
.if TARGET==C128
fkeys .byte $85, $89, $86, $8a, $87, $8b, $88, $8c, $83, $84
.elsif (TARGET==PLUS4) || (TARGET==C16)
fkeys .byte $85, $86, $87, $89, $8a, $8b, $8c, $88
.elsif TARGET==ATARI800
kbname .text "K:",k_return
.fi
.if (TARGET==C64) || (TARGET==PLUGIN)
nmiram sec
.byte $90
irqram clc
pha
pha $01
lda #$37
sta $01
pha #>irq_return
pha #<irq_return
pha #$28
bcs +
jmp ($fffe)
+ jmp ($fffa)
irq_return pla $01
pla
rti
irq .proc
lsr $c6
bcc +
ldx waitkey.write+1
dex
bpl e
ldx #8
e cpx waitkey.read+1
beq +
lda keybuffer
sta keybuffer+1,x
stx waitkey.write+1
+
old jmp $ffff
.pend
.elsif (TARGET==VIC20) || (TARGET==VIC20BIG)
irq .proc
lsr $c6
bcc +
ldx waitkey.write+1
dex
bpl e
ldx #8
e cpx waitkey.read+1
beq +
lda keybuffer
sta keybuffer+1,x
stx waitkey.write+1
+
old jmp $ffff
.pend
.elsif (TARGET==PET40) || (TARGET==PET80)
irq .proc
lsr $9e
bcc +
ldx waitkey.write+1
dex
bpl e
ldx #8
e cpx waitkey.read+1
beq +
lda keybuffer
sta keybuffer+1,x
stx waitkey.write+1
+
old jmp $ffff
.pend
.elsif TARGET==C128
irq .proc
ldx $d2
lda $100a,x
lsr $d1
bcs u
lsr $d0
bcc +
lda keybuffer
u ldx waitkey.write+1
dex
bpl e
ldx #8
e cpx waitkey.read+1
beq +
sta keybuffer+1,x
stx waitkey.write+1
+
old jmp $ffff
.pend
.elsif TARGET==ATARI800
irq .proc
bit critical
bmi +
ldx 764
inx
beq +
dex
lda #255
sta 764
txa
ldx waitkey.write+1
dex
bpl e
ldx #8
e cpx waitkey.read+1
beq +
sta keybuffer+1,x
stx waitkey.write+1
+
old jmp $ffff
.pend
.elsif (TARGET==PLUS4) || (TARGET==C16)
.if TARGET==PLUS4
irqram pha
sta $ff3e
pha #>irq_return
pha #<irq_return
pha #$28
jmp ($fffe)
irq_return sta $ff3f
pla
rti
.fi
irq .proc
ldx $55e
lda $567,x
lsr $55d
bcs u
lsr $ef
bcc +
lda keybuffer
u ldx waitkey.write+1
dex
bpl e
ldx #8
e cpx waitkey.read+1
beq +
sta keybuffer+1,x
stx waitkey.write+1
+
old jmp $ffff
.pend
.fi
start
ldx #zpend-zpstart-1
- lda zpstart,x
sta zpsave,x
dex
bpl -
.if (TARGET==C64) || (TARGET==PLUGIN)
#loadw irqram, $fffe
#loadw nmiram, $fffa
sei
#movew virq, irq.old+1
#loadw irq, virq
cli
lda #128
sta 650
lda #$37
sta $01
lda #>memoryend
sta alloc.end+1
.elsif TARGET==C128
sei
#movew virq, irq.old+1
#loadw irq, virq
ldx #9
- lda #1
sta $1000,x
lda fkeys,x
sta $100a,x
dex
bpl -
stx $d8
lda #$3f
sta $d501 ;kernal
lda #$00
sta $d502 ;ram
cli
sta $ff00
lda #>memoryend
sta alloc.end+1
.elsif (TARGET==VIC20) || (TARGET==VIC20BIG)
lda $38
sta alloc.end+1
sei
ldx #$40
txs
#movew virq, irq.old+1
#loadw irq, virq
cli
lda #128
sta 650
.elsif (TARGET==PLUS4) || (TARGET==C16)
.if TARGET==C16
lda $38
bpl +
lda #$80
+ sta alloc.end+1
.elsif TARGET==PLUS4
.if GFX==0
lda $38
sta alloc.end+1
.fi
#loadw irqram, $fffe
.fi
#kernal
sei
#movew virq, irq.old+1
#loadw irq, virq
ldx #7
- lda #1
sta $55f,x
lda fkeys,x
sta $567,x
dex
bpl -
cli
.elsif (TARGET==PET40) || (TARGET==PET80)
sei
#movew virq, irq.old+1
#loadw irq, virq
cli
lda $35
sta alloc.end+1
ldx #$40
txs
lda #14
jsr $ffd2
.elsif TARGET==ATARI800
sei
#movew virq, irq.old+1
#loadw irq, virq
cli
lda $2e6
sta alloc.end+1
lda #20
sta 729 ;repeat wait
lda #3
sta 730 ;repeat speed
lda #0
sta 702 ;shift lock
lda #255
sta 731 ;noclick
ldx #$10
lda #3
sta iccom,x
lda #<(kbname)
sta icba,x
lda #>(kbname)
sta icba+1,x
lda #4
sta icax1,x
lda #0
sta icax2,x
jsr ciov ;keyboard
.elsif TARGET==APPLE2
lda $74
sta alloc.end+1
lda #1
sta $aab6 ;dos language flag
sta $76 ;current line number
sta $33 ;prompt char
.fi
dec alloc.end+1
jsr clearmem
lda #windows.status
jsr setwin
jsr clearwin
lda #windows.main
jsr selectwin
.comment
.if TARGET!=PLUGIN
ldy #7
cpy #width-3
blt +
ldy #width-3
+ sty filename
iny
- dey
lda nu,y
sta filename+1,y
tya
bne -
jsr load
jmp +
nu .text "doc.seq"
+
.fi
.endc
.if TARGET==PLUGIN
ldy $b7
cpy #width-3
blt +
ldy #width-3
+ sty filename
iny
- dey
lda ($bb),y
sta filename+1,y
tya
bne -
jsr load
+ .else
lda #0
sta filename
.fi
jsr displayinit
.if SIMPLE
jsr waitkey
- jsr insertmode
jsr cmdmode
jmp -
.else
kloop2 lsr display.now
ldx #1
stx oneless
stx repeat
stx waitkeyrepeat.norepeat
dex
stx repeat+1
stx linewise
ldx #registers.unnamed
stx register
jsr waitkeyrepeat
sec
ror error
ldx #keylookup.normalkeys
jsr keylookup
bit error
bmi kloop2
; dec 1
; inc $d020
; inc 1
jmp kloop2
motiontry tya
ldx #keylookup.motionkeys
.fi
keylookup .proc
tay
sta j+1
- inx
lda keys-1,x
beq +
j cmp #0
bne -
+ txa
asl
tax
pha keyroutines-1,x
pha keyroutines-2,x
rrts rts
keys
.logical 0
.if !SIMPLE
normalkeys .byte "x", "X", "D", "C", "s", "S"
.byte "y", "p", "P"
.byte "o", "O"
.byte "i", k_ins, "I"
.byte "a", "A"
.byte "J"
.byte "d", "g", "z", "c"
.byte "m"
.byte "g"-k_control, ":", "/"
.byte "e"-k_control, "y"-k_control
.byte "f"-k_control
.byte "b"-k_control
.byte 0
.fi
insertkeys .byte k_del
.byte 27, 3
.byte k_return
.byte "e"-k_control, "y"-k_control
.byte 0
motionkeys
.byte "h"
.if !SIMPLE
.byte 8
.byte "j", 10, 14
.byte "k", 16
.byte "l"
.byte k_del, 32
.byte "0"
.byte "f", "t"
.byte "F", "T"
.byte "$"
.byte 94, 169
.byte "H", "M", "L"
.byte "G"
.byte 95, "'"
.byte "+", k_return
.byte "-"
.fi
motionkeys2 .byte k_cursordown
.byte k_cursorup
.byte k_cursorright
.byte k_cursorleft
.byte 19, 147
.byte 136
.byte 133
.byte 0
.if !SIMPLE
gkeys .byte "g"
.byte "I"
.byte "m"
.byte "0", 19
.byte "$", 147
.byte 0
zkeys .byte "h", k_cursorleft
.byte "l", k_cursorright
.byte "H", "L"
.byte "s", "e"
.byte 0
.fi
cmdkeys .byte k_cursorright
.byte k_cursorleft
.byte 19, 147
.byte "b"-k_control, "e"-k_control
.byte 27, 3
.byte k_del, k_return
.byte 0
.here
keyroutines
.if !SIMPLE
.rta kx, kX, kD, kC, ks, kS
.rta ky, kp, kP
.rta ko, kO
.rta insertmode, insertmode, kI
.rta ka, kA
.rta kJ
.rta kd, kg, kz, kc
.rta motion_m
.rta ctrlg, cmdmode, searchmode
.rta scroll_ctrl_e, scroll_ctrl_y
.rta scroll_ctrl_f
.rta scroll_ctrl_b
.rta motiontry
.fi
.rta kX
.rta insertmode.exit, insertmode.exit
.rta insertmode.kreturn
.rta insert_ctrl_e, insert_ctrl_y
.rta insertmode.put
.rta motion_h
.if !SIMPLE
.rta motion_h
.rta motion_j, motion_j, motion_j
.rta motion_k, motion_k
.rta motion_l
.rta motion_backspace, motion_space
.rta motion_0
.rta motion_f, motion_t
.rta motion_F, motion_T
.rta motion_dollar
.rta motion_uparrow, motion_bar
.rta motion_H, motion_M, motion_L
.rta motion_G
.rta motion_backtick, motion_tick
.rta motion_plus, motion_plus
.rta motion_minus
.fi
.rta motion_j
.rta motion_k
.if SIMPLE
.rta motion_space
.rta motion_backspace
.else
.rta motion_l
.rta motion_h
.fi
.rta motion_0, motion_dollar
.rta scroll_ctrl_f
.rta scroll_ctrl_b
.rta rrts
.if !SIMPLE
.rta motion_gg
.rta kgI
.rta motion_gm
.rta motion_g0, motion_g0
.rta motion_gdollar, motion_gdollar
.rta rrts
.rta scroll_zh, scroll_zh
.rta scroll_zl, scroll_zl
.rta scroll_zH, scroll_zL
.rta scroll_zs, scroll_ze
.rta rrts
.fi
.rta motion_l
.rta cmd_h
.rta cmd_0, motion_dollar
.rta cmd_0, motion_dollar
.rta cmd_exit, cmd_exit
.rta cmd_X, cmd_return
.rta cmd_put
.pend
waitkey .proc
-
.if TARGET==APPLE2
lda $c000
bmi +
jsr display
jsr cursorup
jmp -
+ and #$7f
sta $c010
.elsif TARGET==BBC
jsr display
jsr cursorup
jsr osrdch
sta kbchr
cmp #$1b ; If escape
bne +
pha
lda #$7e
jsr osbyte ; clear error
pla
+
.else
read ldx #0
write cpx #0
bne +
jsr display
jsr cursorup
jmp -
+ dex
bpl +
ldx #8
+ lda keybuffer+1,x
stx read+1
.fi
.if TARGET==ATARI800
sec
ror critical
sta 764
ldx #$10
lda #7
sta iccom,x
lda #<(ej+1)
sta icba,x
lda #>(ej+1)
sta icba+1,x
lda #1
sta icbl,x
lsr
sta icbl+1,x
jsr ciov
lsr critical
ej lda #0
.fi