enforce minimum file size on write

res/history.md

@@ -43,6 +43,7 @@
  - properly set alternate display mode on IIgs (affected Centipede, Mr. Do, and others)
  - no longer crashes after loading a double hi-res screenshot from a SCSI hard drive
  - pressing Space will now also show a game's screenshots, as well as Tab
+ - Small high score files (e.g. Apple Cider Spider) are saved
 
 # Revision 1 / serial number 190720
 

src/prodos.impl.a

@@ -248,6 +248,12 @@ ProDOS_enter
     adc    #1
     and    #$fe
     sta    sizehi
+    lda    bleftlo
+    adc    #$ff
+    lda    blefthi
+    adc    #1
+    and    #$fe
+    sta    blefthi
 
 @skip_align
     jsr    hddrdwrpart