disasm wip
This commit is contained in:
Joshua Bell
parent
d24f730bc5
commit
0a72666c6a
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@ -50,12 +50,14 @@ PORT2_ACIA_STATUS := $C0A9
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PORT2_ACIA_COMMAND := $C0AA
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PORT2_ACIA_CONTROL := $C0AB
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;;; Actually registers for a clock card of some sort
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DISXY := $C058
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ENBXY := $C059
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X0EDGE1 := $C05C
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X0EDGE2 := $C05D
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MOUSE_BTN := $C063
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;;; Annunciators/switch inputs - clock in game adapter port?
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CLRAN0 := $C058
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SETAN0 := $C059
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CLRAN1 := $C05A
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SETAN1 := $C05B
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CLRAN2 := $C05C
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SETAN2 := $C05D
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RD63 := $C063 ; Switch Input 3
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kClockRoutineMaxLength = 125 ; Per ProDOS 8 TRM
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@ -69,6 +71,8 @@ kDefaultYear = 1986
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kDefaultDelay = $5D
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kPatchedDelay = $5C
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;;; ============================================================
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L2000:
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default_slot := * + 1
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lda #kDefaultDriveSlot ; For easy patching???
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@ -135,8 +139,8 @@ is_iic: sty mach_type
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sta chain + (wrap2 - Chain)
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;; Adjust everything down a line
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inc wndtop
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inc wndbtm
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inc DoInstall_wndtop
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inc DoInstall_wndbtm
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bne :+
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init_80_col:
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@ -159,7 +163,7 @@ loop:
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check_msb := * + 2 ; check for second $FF
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ldx L239E+1,y
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cpx #$FF
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beq L208F ; done!
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beq DoInstall ; done!
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:
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write_msb := * + 2
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@ -174,8 +178,10 @@ loop:
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bne loop ; always
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.endproc
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;;; ============================================================
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L208F: ldy #MessageCode::kInstall
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.proc DoInstall
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ldy #MessageCode::kInstall
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jsr ShowMessage
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wndtop := * + 1
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@ -243,8 +249,6 @@ assign: and #%01110000 ; slot
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;;; Patch2 - SSC in Slot 2, COMMAND not restored
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;;; Patch3 -
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kPatchLength = $38
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lda flags
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and #%00000011
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beq not_seiko ; not Seiko
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@ -280,21 +284,19 @@ apply_patch:
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check_time_maybe_install:
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lda #2 ; 3 tries total
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sta tries
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;; On IIc, first try with serial port
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;; On IIc, second try is with printer port
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;; On IIc, third try fails
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;; On IIe, first try is with ???
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;; On IIe, second try fails
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: jsr InvokeDriverValidateDateTime
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bcs MaybeTryOtherPort
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dec tries
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dec tries ; avoid false positives?
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bpl :-
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bmi install_clock ; always... but should never run ???
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bmi InstallClock ; always
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tries: .byte 0
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;;; ------------------------------------------------------------
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.endproc
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DoInstall_wndtop := DoInstall::wndtop
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DoInstall_wndbtm := DoInstall::wndbtm
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;;; ============================================================
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tried_port1_flag: .byte 0
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@ -315,11 +317,11 @@ tried_port1_flag: .byte 0
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sty Patch0_acia_command_patch2
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lda flags
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and #%00000011
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beq check_time_maybe_install
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beq DoInstall::check_time_maybe_install
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sty Patch0_acia_command_patch3
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;; Try again
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bne check_time_maybe_install ; always
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bne DoInstall::check_time_maybe_install ; always
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;; --------------------------------------------------
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@ -341,9 +343,12 @@ no_clock:
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jmp ShowMessageAndChainOrHang ; will chain since kNoClock
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.endproc
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;; --------------------------------------------------
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;;; ============================================================
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;;; Run after the selected driver has been verified to work.
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;;; Prompts for current year, updates the timestamped file on disk,
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;;; patches/relocates the driver, and then chains to next file.
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install_clock:
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.proc InstallClock
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lda #OPC_JMP_abs
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sta DATETIME
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lda MACHID
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@ -392,7 +397,7 @@ retry:
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ldy #MessageCode::kOkPrompt
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jsr ShowMessage
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;; Wait for keypress
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;; Wait for Y/N keypress
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: jsr RDKEY
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and #%11011111 ; lowercase --> uppercase
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cmp #'Y'|$80
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@ -417,14 +422,14 @@ retry:
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jmp retry
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.endscope
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;; --------------------------------------------------
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;; Current year is okay
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;; Current year is okay - update the file with date/timestamp
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year_ok:
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lda $1204
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lda $1204 ; unused???
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jsr YearFromBCD
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jsr InvokeDriver
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jsr WriteFileInfo
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;; Patch clock driver
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L21DF: lda RWRAM1 ; Driver lives in LC Bank 1
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lda RWRAM1 ; so bank that in
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@ -452,8 +457,9 @@ install_ptr := * + 1
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;; Chain
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jmp Chain
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.endproc
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;;; ------------------------------------------------------------
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;;; ============================================================
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;;; Convert year from BCD
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;;; Input: bcd_year
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;;; Output: year
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@ -482,7 +488,7 @@ install_ptr := * + 1
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rts
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.endproc
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;;; ------------------------------------------------------------
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;;; ============================================================
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;;; Convert to BCD
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;;; Input: A = number
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;;; Output: A = BCD number
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@ -507,7 +513,7 @@ install_ptr := * + 1
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rts
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.endproc
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;;; ------------------------------------------------------------
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;;; ============================================================
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;;; Invoke the driver, then verify that the result is a valid
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;;; date/time.
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;;; Output: Carry clear if valid, set otherwise.
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@ -556,6 +562,8 @@ Driver: cld
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patch_target:
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;; --------------------------------------------------
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;; Patch applied from here...
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kPatchLength = $38
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.proc Patch0
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acia_command_patch1 := * + 1
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@ -721,14 +729,14 @@ Patches:
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;; Trigger reading
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firmware_byte := * + 1
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lda $C0E0 ; Set to $C0x0, n=slot+8
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lda DISVBL
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lda CLRAN1
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ldy #1
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ldx #22
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trigger_loop:
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dex
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bne trigger_loop
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lda DISVBL,y
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lda CLRAN1,y
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ldx #11
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dey
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bpl trigger_loop
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@ -754,7 +762,7 @@ read_loop:
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bne :-
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read_register:
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lda MOUSE_BTN
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lda RD63
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rol a
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ror digits_buffer,x
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lsr digits_buffer+1,x
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@ -832,14 +840,14 @@ read_status:
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.proc Patch3
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;; Trigger reading
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lda ENVBL
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sta ENBXY
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sta X0EDGE1
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lda SETAN1
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sta SETAN0
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sta CLRAN2
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nop
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nop
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nop
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nop
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lda DISXY
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lda CLRAN0
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ldx #21
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: dex ; wait
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@ -855,25 +863,25 @@ read_status:
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read_loop:
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ldy #4 ; bits per digit
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bit_loop:
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lda MOUSE_BTN
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lda RD63
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rol a
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ror digits_buffer,x
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lsr digits_buffer+1,x
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sta X0EDGE2
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sta SETAN2
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nop
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nop
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nop
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nop
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nop
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nop
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sta X0EDGE1
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sta CLRAN2
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dey
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bne bit_loop
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dex
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bpl read_loop
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;; Finish up
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lda DISVBL
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lda CLRAN1
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.endproc
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.assert .sizeof(Patch3) = kPatchLength, error, "Patch length"
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