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https://github.com/a2stuff/IIcSystemClock.git
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disasm wip
This commit is contained in:
Joshua Bell
parent
117ba0b606
commit
d24f730bc5
@ -9,7 +9,6 @@
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;;; TODO: Identify 4 different clock drivers.
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;;; * IIc System Clock
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.enum MessageCode
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kInstall = 0
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kNoSysFile = 1
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@ -228,23 +227,34 @@ assign: and #%01110000 ; slot
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;;; ------------------------------------------------------------
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;;; Select and apply patch
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;;; flags mach_type Version
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;;; ...00 0 Patch2 IIc
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;;; ...01 0 Patch0 IIc Seiko
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;;; ...10 0 Patch0 IIc Seiko
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;;; ...11 0 Patch0 IIc Seiko
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;;; ...00 1 Patch1 IIe Seiko
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;;; ...01 1 Patch3 IIe Seiko
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;;; ...10 1 Patch0 IIe Seiko
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;;; ...11 1 Patch0 IIe Seiko
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;;; Patch0 - (default) SSC in either Slot 1 or Slot 2
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;;; Patch1 - otherwise
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;;; Patch2 - IIc; SSC in Slot 2, COMMAND not restored
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;;; Patch1 -
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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 select2 ; apply Patch2 if IIc, Patch1 otherwise
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beq not_seiko ; not Seiko
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cmp #%00000010
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bcs check_time_maybe_install ; no patch
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lda mach_type
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bne not_iic ; apply Patch3
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beq check_time_maybe_install ; always
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select2:
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not_seiko:
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ldy #Patch2 - Patches
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lda mach_type
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beq apply_patch ; if IIc
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@ -268,26 +278,36 @@ apply_patch:
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;;; Compute time and install clock driver
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check_time_maybe_install:
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lda #2
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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 L2111
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bcs MaybeTryOtherPort
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dec tries
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bpl :-
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bmi install_clock ; always
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bmi install_clock ; always... but should never run ???
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tries: .byte 0
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;;; ------------------------------------------------------------
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L2110: .byte 0
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tried_port1_flag: .byte 0
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.proc L2111
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.proc MaybeTryOtherPort
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lda mach_type
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bne skip ; not IIc
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lda L2110
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bne skip
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inc L2110
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bne fail ; not IIc - give up
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;; Is a IIc - have we tried the other port?
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lda tried_port1_flag
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bne fail ; yes - give up
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;; Switch to printer port...
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inc tried_port1_flag
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ldy #<PORT1_ACIA_STATUS
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sty Patch0_acia_status_patch1
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iny ; <PORT1_ACIA_COMMAND
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@ -296,10 +316,14 @@ L2110: .byte 0
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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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sty Patch0_acia_command_patch3
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bne check_time_maybe_install
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skip: ldy #MessageCode::kNoClock
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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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;; --------------------------------------------------
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fail: ldy #MessageCode::kNoClock
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sty msg_num
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lda MACHID ; Check for clock card
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ror a
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@ -314,12 +338,11 @@ no_clock:
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sta DATELO+1
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sta TIMELO
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sta TIMELO+1
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jmp ShowMessageAndMaybeChain
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jmp ShowMessageAndChainOrHang ; will chain since kNoClock
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.endproc
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;; --------------------------------------------------
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install_clock:
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lda #OPC_JMP_abs
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sta DATETIME
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@ -817,9 +840,10 @@ read_status:
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nop
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nop
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lda DISXY
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ldx #$15
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L2364: dex
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bne L2364
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ldx #21
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: dex ; wait
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bne :-
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;; ------------------------------
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;; Read bit out of register
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@ -945,18 +969,20 @@ entries_loop:
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ldy #strlen_str_clock_system
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: lda (entry_ptr),y
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cmp str_clock_system,y
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bne L1053
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bne :+
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dey
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bne :-
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beq next_entry ; match - (but want *next* system file)
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L1053: lda name_length
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: lda name_length
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sta open_pathname
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sta $0280
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inc name_length
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;; Show clock type message
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lda msg_num
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cmp #7
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beq L1070
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cmp #MessageCode::kNoClock
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beq show_running
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ldy #MessageCode::kIIc
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jsr MaybeAddSeikoToMessage
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@ -965,7 +991,8 @@ L1053: lda name_length
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iny ; k(Seiko)IIc --> k(Seiko)IIe
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: jsr ShowMessage
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L1070: ldy #MessageCode::kRunning
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show_running:
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ldy #MessageCode::kRunning
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jsr ShowMessage
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;; Copy and print pathname being invoked
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@ -1017,7 +1044,7 @@ next_entry:
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tya
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bne :+
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ldy #MessageCode::kNoSysFile
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jmp ShowMessageAndMaybeChain
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jmp ShowMessageAndChainOrHang ; will hang since not kNoClock
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: jsr ReadBlock
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lda #$00
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@ -1171,10 +1198,10 @@ retry:
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;; fall through
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.endproc
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;;; Show message and chain to next system file, unless
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;;; kNoClock (in which case: hang)
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;;; Show message. If kNoClock, then chain to next system file;
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;;; otherwise: hang.
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.proc ShowMessageAndMaybeChain
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.proc ShowMessageAndChainOrHang
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sty msg_num
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jsr ShowMessage
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jsr Bell
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@ -1262,12 +1289,12 @@ file_info_params:
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;;; Misc variables
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;;; bit 0/1: 00 - if IIc => Patch2, else => Patch1
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;;; 01 - if IIc => Patch0, else => Patch3
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;;; 10 - Patch0
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;;; 11 - Patch0
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;;; bit 0/1: 00 - if IIc => Patch2, else => Patch1
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;;; 01 - if IIc => Patch0, else => Patch3; Seiko
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;;; 10 - Patch0; Seiko
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;;; 11 - Patch0; Seiko
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;;; ...
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;;; bit 7
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;;; bit 7:
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flags: .byte 0
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bcd_year:
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