README.md

@@ -3,7 +3,7 @@
 Boot any Apple II disk on any Apple II
 
 [Download latest Anti-M disk image](https://github.com/a2-4am/anti-m/releases/latest/download/anti-m.dsk)
-(version **2.2**, released **2024-02-27**, runs on any 48K Apple II)
+(version **2.1**, released **2024-02-23**, runs on any 48K Apple II)
 
 ## What is this?
 
@@ -99,10 +99,6 @@ launching Anti-M.
 
 ## History
 
-v2.2 - 2024-02-27
-
-- add support for ABM
-
 v2.1 - 2024-02-23
 
 - fix detection of 13-sector disks (thanks John A. for the report)

src/anti-m.a

@@ -6,7 +6,7 @@
 ;-------------------------------
 ; Anti-M
 ; a 4am hack
-; (c) 2019-2024 by 4am
+; (c) 2019-2023 by 4am
 ;
 ; Permission is hereby granted, free of charge, to any
 ; person obtaining a copy of this software and associated
@@ -346,7 +346,7 @@ StringTable
          !word @mainmenu
 
 @header
-         !text "Anti-M v2.3 by 4am            2024-08-30"
+         !text "Anti-M v2.1 by 4am            2024-02-23"
          !text "________________________________________",$8D
          !text $8D,$8D,$8D,$8D,$8D,$8D,$8D,$8D,$00
 @mainmenu

src/idboot.a

@@ -265,21 +265,6 @@ IDBoot13
          jmp   @dispatch
 
 @notdos32g
-         lda   #$20
-         ldx   #$E9
-         ldy   #8
-         jsr   @CompareMemoryRel
-         !byte $CC,$00,$04 ;CPY $0400
-         !byte $D0,$03     ;BNE *+5
-         !byte $4C,$01,$04 ;JMP $0401
-         bcs   @notssi
-         lda   #<@callbackssi
-         sta   $20EF
-         lda   #>@callbackssi
-         sta   $20F0
-         jmp   @dispatch
-
-@notssi
 
 @dispatch
          lda   $d1d1 ;SMC
@@ -288,17 +273,6 @@ IDBoot13
          pha
          ldx   #$60
          rts
-
-@callbackssi
-         lda   #<@callbackssi2
-         sta   $429
-         lda   #>@callbackssi2
-         sta   $42A
-         jmp   $401
-
-@callbackssi2
-         inc   $BD6F
-         jmp   $B700
 }
 
 PatchBoot13

src/idbroderbund.a

@@ -25,8 +25,6 @@
 ; - Russki Duck (Gebelli)
 ; - Zenith (Gebelli)
 ; - Disk Recovery (Sensible Software)
-; - ABM (MUSE)
-; - Palace in Thunderland (Microlab)
 ;
 IDBroderbund
 ; first stage is just a standard hybrid DOS 3.2/3.3 bootloader
@@ -269,10 +267,6 @@ IDBroderbund
          ldx   #<@DOS33Callback
          ldy   #>@DOS33Callback
          cmp   #$B6
-         beq   @hookhybrid
-         ldx   #<@MUSECallback
-         ldy   #>@MUSECallback
-         cmp   #$76
          bne   @jmpdos
 
 @hookhybrid
@@ -443,49 +437,9 @@ IDBroderbund
 
 @notdos33
 @skip2e
-         lda   #$BD
-         ldx   #$6E
-         ldy   #8
-         jsr   CompareMemory
-         !byte $BD,$8A,$C0 ;LDA $C08A,X
-         !byte $B0,$03     ;BCS *+5
-         !byte $BD,$8B,$C0 ;LDA $C08B,X
-         bcs   @notdos33b
-         lda   $85FF
-         beq   +
-         inc   $BD6F
-+        ldx   #(@MicrolabCallback_e-@MicrolabCallback)-1
--        lda   @MicrolabCallback,x
-         sta   $280,x
-         dex
-         bpl   -
-         sec
-         ror   $b7b8
-         lda   #2
-         sta   $b7b9
-
-@notdos33b
          ldx   #$60
          jmp   $B700
 
-@MUSECallback
-         lda   $85FF
-         beq   @skip2f
-         lda   #$7D
-         ldx   #$5F
-         ldy   #8
-         jsr   CompareMemory
-         !byte $BD,$8A,$C0 ;LDA $C08A,X
-         !byte $B0,$03     ;BCS *+5
-         !byte $BD,$8B,$C0 ;LDA $C08B,X
-         bcs   @notmuse
-         inc   $7D60
-
-@notmuse
-@skip2f
-         ldx   #$60
-         jmp   $7700
-
 @StarThiefCallback2 !pseudopc $110 {
 @StarThiefCallback2x
          lda   #$4C
@@ -513,17 +467,3 @@ IDBroderbund
          jmp   $4D36
 }
 @BugAttackCallback2_e
-
-@MicrolabCallback !pseudopc $280 {
-         jsr   $BD00
-         lda   $B7EC
-         cmp   #$12
-         bne   +
-         lda   $B7ED
-         bne   +
-         lda   #$60
-         sta   $960F
-+        clc
-         rts
-}
-@MicrolabCallback_e