mirror of
https://github.com/a2-4am/4live.git
synced 2024-12-21 11:29:20 +00:00
refactor for smaller code, back under 2kb
This commit is contained in:
Peter Ferrie
parent
e8002eb5f8
commit
282d890abd
116
src/4live.a
116
src/4live.a
@ -21,7 +21,6 @@
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!addr DOSBASE = $3D2
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!addr FILEMAN = $3D6
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!addr GETPARM = $3DC
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!addr RECONNECTDOS = $3EA
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!addr KBD = $C000
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!addr STROBE = $C010
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!addr LCBANK2 = $C083
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@ -92,6 +91,7 @@ LdrStart
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;set slot and drive in MLI request packet
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jsr GETIOB
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pha ;save for later
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sty OPSRC1L
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sta OPSRC1H
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ldy #IOBDRIVE
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@ -243,8 +243,8 @@ GetKey
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lda ROMIN1
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;lather, rinse, repeat
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jsr RDCHAR
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jmp GetKey
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jsr RDCHAR ;returns non-zero
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bne GetKey
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ReadFile
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WriteFile
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@ -310,7 +310,7 @@ InstallStart
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!pseudopc INSTALLBUFFER {
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;check for DiversiDOS
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jsr GETIOB
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pla
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eor #$BF
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bne + ;regular DOS
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sta ReadBuffer
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@ -327,24 +327,7 @@ InstallStart
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;read second overlay to banked RAM
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jsr ExchangeSwapBanked2
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lda #$20
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sta SwapFILEMAN
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jsr DOSMLI
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!byte InstallReadMLI_e - InstallReadMLI_b
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InstallReadMLI_b
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!byte CMDREAD
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!byte POSREADRANGE
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!word 0 ;record number
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!word BankedCopyStart - LdrHeader
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;offset
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!word BankedCopyEnd - BankedCopyStart
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;number of bytes
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InstallReadBuffer
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!word $D000 ;buffer
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InstallReadMLI_e
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jsr ExchangeSwapBanked2
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jsr ReadEditor
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;open source file and read it if available
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@ -398,9 +381,27 @@ CharMap1
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sta KSWL
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lda #>GlobalKeyboardHook
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sta KSWH
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jsr RECONNECTDOS
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jmp WARMDOS
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ReadEditor
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jsr ExchangeSwapBanked2
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lda #$20
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sta SwapFILEMAN
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jsr DOSMLI
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!byte InstallReadMLI_e - InstallReadMLI_b
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InstallReadMLI_b
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!byte CMDREAD
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!byte POSREADRANGE
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!word 0 ;record number
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!word BankedCopyStart - LdrHeader
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;offset
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!word BankedCopyEnd - BankedCopyStart
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;number of bytes
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InstallReadBuffer
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!word $D000 ;buffer
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InstallReadMLI_e
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;fall through to ExchangeBanked2
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ExchangeSwapBanked2
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rts ;self-modified to LDA in DiversiDOS environment
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!byte ((>$D000) - >((<(BankedCopyEnd - BankedCopyStart)) + 255))
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@ -457,17 +458,8 @@ IsDirty
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rts
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ScrollEditBufferIn
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lda #<LastLine
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sta OPSRC1L
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lda #>LastLine
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sta OPSRC1H
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lda #<(LastLine - WIDTH)
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sta OPDST1L
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lda #>(LastLine - WIDTH)
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sta OPDST1H
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lda #HEIGHT
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sta SCROLLLINE
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ldy #(<(ScrollParms2 - ScrollParms1) - 1)
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jsr SetScrollLines
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;copy last line on screen to temporary buffer
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-- ldy #(WIDTH - 1)
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@ -493,31 +485,21 @@ CharMap2
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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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lda #-WIDTH
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ldy #$FF
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jsr UpdateVirtualOff
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dec SCROLLLINE
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jsr UpdateVirtualOff ;returns zr/nz state of SCROLLLINE
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bne --
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rts
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ScrollEditBufferOut
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lda #<FirstLine
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sta OPSRC1L
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lda #>FirstLine
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sta OPSRC1H
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lda #<(FirstLine + WIDTH)
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sta OPDST1L
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lda #>(FirstLine + WIDTH)
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sta OPDST1H
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lda #HEIGHT
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sta SCROLLLINE
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ldy #((<(ScrollParms2 - ScrollParms1) * 2) - 1)
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jsr SetScrollLines
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;copy first line on screen to temporary buffer
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-- ldy #(WIDTH - 1)
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- lda $0400, y ;self-modified
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- lda $0400, y
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sta (OPSRC1L), y
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dey
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bpl -
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@ -533,15 +515,31 @@ ScrollEditBufferOut
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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 ;returns A=0
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tay
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lda #WIDTH
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jsr UpdateVirtualOff
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dec SCROLLLINE
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jsr UpdateVirtualOff ;returns zr/nz state of SCROLLLINE
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bne --
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rts
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SetScrollLines
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ldx #3
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- lda ScrollParms1, y
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sta OPSRC1L, x
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dey
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dex
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bpl -
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lda #HEIGHT
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sta SCROLLLINE
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rts
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ScrollParms1
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!word LastLine, LastLine - WIDTH
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ScrollParms2
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!word FirstLine, FirstLine + WIDTH
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UpdateVirtualOff
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;set up copy addresses for next line
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@ -557,6 +555,7 @@ UpdateVirtualOff
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dex
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dex
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bpl -
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dec SCROLLLINE
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rts
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ScrollTextScreenDown
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@ -579,7 +578,7 @@ SetTextCalc
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rts
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ScrollTextScreenUp
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ldx #1 - HEIGHT
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ldx #(1 - HEIGHT)
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- lda (TextCalcLo + HEIGHT - $101) +1, x
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sta OPSRC2L
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lda TextCalcLo + HEIGHT - $101, x
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@ -617,24 +616,23 @@ MyWAIT
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ClearScreen ; does not clear status line
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pha
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clc
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bcc +
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HandleKeyImportScreen
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HandleKeyImportScreen ;called with carry set
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lda #<(LastLine - WIDTH)
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sta OPSRC1L
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lda #>(LastLine - WIDTH)
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sta OPSRC1H
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+ ldx #(HEIGHT - 2)
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ldx #(HEIGHT - 2)
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-- jsr SetTextCalc
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ldy #(WIDTH - 1)
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lda #$A0
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- bcc +
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- bcc + ;ClearScreen path
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lda (OPSRC1L), y
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+ sta (OPSRC2L), y
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dey
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bpl -
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bcc +
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bcc + ;ClearScreen path
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sec
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lda OPSRC1L
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sbc #WIDTH
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@ -644,7 +642,7 @@ HandleKeyImportScreen
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sec
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+ dex
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bpl --
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bcc ClearScreenRet
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bcc ClearScreenRet ;ClearScreen path
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;print anything that isn't a special key
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;wrap around screen position when we hit edges
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