mirror of https://github.com/a2-4am/4cade.git
clean up bootloader and consolidate duplicate code
This commit is contained in:
4am
parent
2f206dfc91
commit
60b1f68c9d
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@ -3,32 +3,18 @@
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;
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PrintBranding
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ldy #9
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- lda TOTAL-1,y
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ora #$80
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sta $04B7-1,y
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dey
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bne -
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; in: text screen is showing
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; out: Y = 0 (important! some callers rely on this!)
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ldy #11
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- lda REPLAY-1,y
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ora #$80
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sta $0536-1,y
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- lda TOTAL-1, y
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sta $04B5-1, y
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lda REPLAY-1, y
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sta $0535-1, y
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dey
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bne -
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rts
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TOTAL
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!text "T O T A L"
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!scrxor $80," T O T A L "
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REPLAY
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!text "R E P L A Y"
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!ifndef RELEASE {
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LoadingVersion
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!byte 8
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!text " build "
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LoadingBuild
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!word BUILDNUMBER
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} else {
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LoadingVersion
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!byte 12
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!text " v5.0.1"
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}
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!scrxor $80,"R E P L A Y"
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@ -7,28 +7,8 @@
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; .SYSTEM file is loaded
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;
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+READ_ROM_NO_WRITE
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sta PRIMARYCHARSET
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sta CLR80VID
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sta STOREOFF
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sta READMAINMEM
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sta WRITEMAINMEM
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jsr ROM_TEXT
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jsr ROM_HOME
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jsr ROM_NORMAL
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jsr ROM_IN0
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jsr ROM_PR0
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; accommodate uppercase-only machines (64K ][ and ][+ are supported)
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lda ROM_MACHINEID
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cmp #$A0
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beq + ; Spectrum ED
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cmp #$06
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beq +
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lda #$DF
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+HIDE_NEXT_2_BYTES
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+ lda #$FF
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sta zpCharMask
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!src "src/4cade.init.machine.a"
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!src "src/4cade.init.screen.a"
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; print text title in same place as graphical title will appear
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jsr PrintBranding
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@ -36,6 +16,9 @@
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; proboothd duplicates the above code and jumps here,
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; so if you make any changes before this comment, you
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; MUST adjust the final JMP in src/proboothd/proboothd.a
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!if (* != ProBootEntry) {
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!serious "ProBootEntry is wrong, should be ", *
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}
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jsr Has64K ; check for 64K (required)
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bcc +
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@ -99,6 +82,17 @@
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sta MONOCOLOR ; bit 7=1 disables color
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+
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; accommodate uppercase-only machines (64K ][ and ][+ are supported)
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lda ROM_MACHINEID
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cmp #$A0
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beq + ; Spectrum ED
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cmp #$06
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beq +
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lda #$DF
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+HIDE_NEXT_2_BYTES
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+ lda #$FF
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sta zpCharMask
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; increase text window width so we can print to the edge of the screen without scrolling
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inc $21
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; print version or build number in lower right corner
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@ -288,6 +282,7 @@ FoundMockingboardCallback
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jmp ROM_COUT
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!src "src/4cade.branding.a"
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!src "src/4cade.version.a"
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Loading64K
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!byte 3
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@ -0,0 +1,15 @@
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;license:MIT
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;(c) 2023 by 4am
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;
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; initialize machine from a cold boot
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; assumes absolutely nothing about machine state
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;
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; note: this file is included by both the launcher and proboothd
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cld
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+READ_ROM_NO_WRITE
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sta PRIMARYCHARSET
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sta CLR80VID
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sta STOREOFF
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sta READMAINMEM
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sta WRITEMAINMEM
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@ -0,0 +1,14 @@
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;license:MIT
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;(c) 2023 by 4am
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;
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; initialize and clear screen
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; assumes zero page is completely trashed other than |zpCharMask|
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; assumes ROM is banked in on entry
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;
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; note: this file is included by both the launcher and proboothd
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jsr ROM_TEXT
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jsr ROM_HOME
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jsr ROM_NORMAL
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jsr ROM_IN0
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jsr ROM_PR0
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@ -0,0 +1,15 @@
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;license:MIT
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;(c) 2023 by 4am
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;
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!ifndef RELEASE {
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LoadingVersion
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!byte 8
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!text " build "
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LoadingBuild
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!word BUILDNUMBER
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} else {
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LoadingVersion
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!byte 12
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!text " v5.0.1"
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}
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@ -161,6 +161,7 @@ gKey = $1F01
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UILine1 = $1FB0
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UILine2 = $1FD8
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UI_ToPlay = $1FF7
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ProBootEntry = $2025
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gValLen = $1F80
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gVal = $1F81
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@ -5,6 +5,8 @@
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!to "build/proboothd",plain
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*=$800
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!src "src/macros.a"
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;zpage usage, arbitrary selection except for the "ProDOS constant" ones
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command = $42 ;ProDOS constant
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unit = $43 ;ProDOS constant
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@ -25,34 +27,21 @@
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txa
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pha
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; put machine in a known state, clear screen
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!src "src/4cade.init.machine.a"
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cld
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bit $c082
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sta $c00e
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sta $c00c
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sta $c000
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sta $c002
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sta $c004
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lda $c000
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cmp #$d3 ; Press "S" on bootup
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lda KBD
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cmp #$D3 ; 'S'
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beq @s
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cmp #$F3 ; 's'
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bne +
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@s
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jsr seasons
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+ jsr $fb2f
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jsr $fc58
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jsr $fe84
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jsr $fe89
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jsr $fe93
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+
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!src "src/4cade.init.screen.a"
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; print title
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; print text title in same place as graphical title will appear
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jsr PrintBranding
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ldy #11
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- lda TOTAL-1, y
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sta $04B6-1, y
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lda REPLAY-1, y
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sta $0536-1, y
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dey
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bne -
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pla
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sta unit
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tax
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@ -151,7 +140,7 @@ blockind ldy $ff
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txa
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bne readfile
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readdone jmp $2036
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readdone jmp ProBootEntry
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seekread stx bloklo
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sty blokhi
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@ -369,10 +358,12 @@ filename
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filename_b
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!text "LAUNCHER.SYSTEM" ;your start-up file, file is max 40kb
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filename_e
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TOTAL
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!byte $A0,$D4,$A0,$CF,$A0,$D4,$A0,$C1,$A0,$CC,$A0
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REPLAY
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!byte $D2,$A0,$C5,$A0,$D0,$A0,$CC,$A0,$C1,$A0,$D9
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!src "src/4cade.branding.a"
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!if (* > $9f7) {
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!serious "Bootloader is too large"
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}
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*=$9f8
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!byte $D3,$C1,$CE,$A0,$C9,$CE,$C3,$AE
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