fix some corner cases

src/zinfo/z1/z1.s

@@ -96,11 +96,11 @@ quit
     jsr    $bf00
     !byte  $c5
     !word  c5_parms
-    ldx    $201
-    inx
-    txa
+    lda    $201
     and    #$0f
-    sta    $200
+    tax
+    inx
+    stx    $200
     lda    #$2f
     sta    $201
     jsr    $bf00
@@ -238,6 +238,10 @@ dump_info
     sbc    #moves_offset
     ldy    #moves_offset
     sta    (zpage_info),y
+
+    ldy    #date_offset
+    lda    #0
+    sta    (zpage_info),y
     rts
 
 fetch_obj:

src/zinfo/z2/z2.s

@@ -98,11 +98,11 @@ quit
     jsr    $bf00
     !byte  $c5
     !word  c5_parms
-    ldx    $201
-    inx
-    txa
+    lda    $201
     and    #$0f
-    sta    $200
+    tax
+    inx
+    stx    $200
     lda    #$2f
     sta    $201
     jsr    $bf00
@@ -244,6 +244,10 @@ dump_info
     sbc    #moves_offset
     ldy    #moves_offset
     sta    (zpage_info),y
+
+    ldy    #date_offset
+    lda    #0
+    sta    (zpage_info),y
     rts
 
 fetch_obj:

src/zinfo/z3/z3.s

@@ -137,11 +137,11 @@ quit
     jsr    $bf00
     !byte  $c5
     !word  c5_parms
-    ldx    $201
-    inx
-    txa
+    lda    $201
     and    #$0f
-    sta    $200
+    tax
+    inx
+    stx    $200
     lda    #$2f
     sta    $201
     jsr    $bf00
@@ -248,8 +248,10 @@ dump_info
     sta    max_chars
     LDA    #$10          ; location
     JSR    fetch_obj
-    LDA    zp_8C
-    JSR    decompress
+    lda    zp_8C
+    bne    +
+    rts
++   JSR    decompress
 
     lda    zpage_ptr
     ldy    #name_offset
@@ -260,6 +262,12 @@ dump_info
     lda    #0
     sta    max_chars ;can't overflow anymore
     sta    (zpage_info),y
+    ldy    #score_offset
+    sta    (zpage_info),y
+    ldy    #moves_offset
+    sta    (zpage_info),y
+    ldy    #date_offset
+    sta    (zpage_info),y
 
     LDA    #$11          ; score
     JSR    fetch_obj

src/zinfo/z4/z4.s

@@ -174,11 +174,11 @@ quit
     jsr    $bf00
     !byte  $c5
     !word  c5_parms
-    ldx    $201
-    inx
-    txa
+    lda    $201
     and    #$0f
-    sta    $200
+    tax
+    inx
+    stx    $200
     lda    #$2f
     sta    $201
     jsr    $bf00

src/zinfo/z5/z5.s

@@ -176,11 +176,11 @@ quit
     jsr    $bf00
     !byte  $c5
     !word  c5_parms
-    ldx    $201
-    inx
-    txa
+    lda    $201
     and    #$0f
-    sta    $200
+    tax
+    inx
+    stx    $200
     lda    #$2f
     sta    $201
     jsr    $bf00

src/zinfo/z5u/z5u.s

@@ -172,11 +172,11 @@ quit
     jsr    $bf00
     !byte  $c5
     !word  c5_parms
-    ldx    $201
-    inx
-    txa
+    lda    $201
     and    #$0f
-    sta    $200
+    tax
+    inx
+    stx    $200
     lda    #$2f
     sta    $201
     jsr    $bf00