mirror of
https://github.com/a2-4am/4live.git
synced 2024-06-25 17:29:35 +00:00
refactor a bit for smaller code
This commit is contained in:
Peter Ferrie
parent
94d27184ca
commit
debcbf429c
142
src/4live.a
142
src/4live.a
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@ -18,7 +18,6 @@
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!addr GETPARM = $3DC
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!addr KBD = $C000
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!addr STROBE = $C010
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!addr ROMIN = $C081
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!addr LCBANK2 = $C083
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!addr APLDETECT = $FBB3 ;#06 if IIe or later
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!addr KEYIN = $FD1B
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@ -147,7 +146,36 @@ Install
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;open source file and read it if available
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jsr OpenReadFile
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jsr GETIOB
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sty OPSRCL
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sta OPSRCH
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ldy #IOBSLOT
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lda (OPSRCL), y
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lsr
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lsr
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lsr
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lsr
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sta FileSlot
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iny ;ldy #IOBDRIVE
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lda (OPSRCL), y
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sta FileDrive
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ldx #OPENEXISTING
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jsr OpenFile
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bcs +
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;;in the future, the read size will come from the saved file
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;;for now, we use a fixed size
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;read file size from file
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;; jsr ReadFile
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;; lda #<LoadSaveStart
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;; sta ReadBuffer
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;; lda #>LoadSaveStart
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;; sta ReadBuffer + 1
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jsr ReadFile
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jsr CloseFile
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+
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;set to true if no data file found (carry is set)
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@ -189,6 +217,10 @@ Install
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_WelcomeMessage
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!scrxor $80, $8D, "4LIVE READY. PRESS CTRL-", HOTKEY + $40, " TO ACTIVATE.", $8D, 0
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FileName_b
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!scrxor $80, $DF, "4LIVE DATA"
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FileName_e
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;support enhanced flashing cursor while waiting for key, if available.
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;it works by passing to the routine the character under the cursor.
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;the ROM toggles between that character and the Delete character.
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@ -279,19 +311,11 @@ VirtualBuff2
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;animation delay
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jsr Delay ;returns carry set
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;set up copy addresses for next line
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lda VirtualBuff1 + 1
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sbc #WIDTH
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sta VirtualBuff1 + 1
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bcs +
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dec VirtualBuff1 + 2
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sec
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+ lda VirtualBuff2 + 1
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sbc #WIDTH
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sta VirtualBuff2 + 1
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bcs +
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dec VirtualBuff2 + 2
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+ dec ScrollLine1 + 1
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lda #-WIDTH
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ldx #$FF
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ldy #0
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jsr UpdateVirtualOff
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dec ScrollLine1 + 1
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ScrollLine1
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ldx #"Q" ;self-modified
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@ -333,27 +357,37 @@ VirtualBuff4
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bpl -
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;animation delay
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jsr Delay ;returns carry set
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jsr Delay
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;set up copy addresses for next line
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lda VirtualBuff3 + 1
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adc #(WIDTH - 1)
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sta VirtualBuff3 + 1
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bcc +
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inc VirtualBuff3 + 2
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clc
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+ lda VirtualBuff4 + 1
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adc #WIDTH
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sta VirtualBuff4 + 1
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bcc +
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inc VirtualBuff4 + 2
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+ dec ScrollLine2 + 1
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lda #WIDTH
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ldx #0
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ldy #<(VirtualBuff3 - VirtualBuff1)
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jsr UpdateVirtualOff
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dec ScrollLine2 + 1
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ScrollLine2
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ldx #"Q" ;self-modified
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bne --
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rts
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UpdateVirtualOff
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clc
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pha
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;set up copy addresses for next line
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adc VirtualBuff1 + 1, y
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sta VirtualBuff1 + 1, y
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txa
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adc VirtualBuff1 + 2, y
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sta VirtualBuff1 + 2, y
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clc
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pla
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+ adc VirtualBuff2 + 1, y
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sta VirtualBuff2 + 1, y
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txa
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adc VirtualBuff2 + 2, y
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sta VirtualBuff2 + 2, y
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rts
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ScrollTextScreenDown
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ldx #(HEIGHT - 2)
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- lda TextCalcLo, x
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@ -444,7 +478,7 @@ EditorMode
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beq _doneEditorMode
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ClearOnFirstKeypress
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ldx #0
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ldx #0 ;self-modified
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beq +
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dec ClearOnFirstKeypress + 1
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jsr ClearScreen
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@ -539,7 +573,7 @@ MyKEYIN
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ldx MyCH + 1
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ScreenBuff2
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lda $34f3, x
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lda $34f3, x ;self-modified
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sta ToggleChar + 1
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CharDel
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@ -556,7 +590,7 @@ ToggleChar
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+ ldx MyCH + 1
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ScreenBuff3
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sta $34f3, x
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sta $34f3, x ;self-modified
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;timing is taken from extended ROM
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;code is optimised for size
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@ -579,7 +613,7 @@ MyCH
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ldx #"Q" ;self-modified
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ScreenBuff4
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sta $34f3, x
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sta $34f3, x ;self-modified
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inx
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cpx #WIDTH
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bne ++
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@ -604,41 +638,7 @@ MyBASCALC
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++ stx MyCH + 1
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rts
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OpenReadFile
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lda ROMIN ;write-enable bank 2 without banking in
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lda ROMIN ;to support DiversiDOS
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jsr GETIOB
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sty OPSRCL
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sta OPSRCH
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ldy #IOBSLOT
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lda (OPSRCL), y
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lsr
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lsr
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lsr
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lsr
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sta FileSlot
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iny ;ldy #IOBDRIVE
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lda (OPSRCL), y
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sta FileDrive
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ldx #OPENEXISTING
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jsr OpenCommon
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bcs OpenRet
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;;in the future, the read size will come from the saved file
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;;for now, we use a fixed size
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;read file size from file
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;; jsr ReadFile
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;; lda #<LoadSaveStart
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;; sta ReadBuffer
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;; lda #>LoadSaveStart
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;; sta ReadBuffer + 1
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jsr ReadFile
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jmp CloseFile
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OpenCommon
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OpenFile
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jsr DOSMLI
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!byte OpenMLI_e - OpenMLI_b
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OpenMLI_b
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@ -665,7 +665,7 @@ SaveFile
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CreateWriteFile
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ldx #CREATEFILE
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jsr OpenCommon
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jsr OpenFile
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bcs OpenRet
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;set write length
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@ -749,10 +749,6 @@ XREG
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ldx #"Q" ;self-modified
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jmp FILEMAN
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FileName_b
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!scrxor $80, $DF, "4LIVE DATA"
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FileName_e
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TextCalcHi
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!byte $04, $04, $05, $05, $06, $06, $07, $07
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!byte $04, $04, $05, $05, $06, $06, $07, $07
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