Incorporated another round of feedback for pull request.

Adjusted comment formatting in several assembler files.
Removed dummy kbhit() function, as it's better to get a linker
error than an implementation that does the wrong thing.

doc/osi.sgml

@@ -139,8 +139,7 @@ There are no loadable drivers available.
 
 <sect1>conio implementation<p>
 
-The conio implementation is complete except for a working kbhit() function. 
+The conio implementation is complete except for a kbhit() function. 
-kbhit() currently returns true unconditionally.
 
 <sect1>stdio implementation<p>
 

libsrc/osic1p/clrscr.s

@@ -22,10 +22,10 @@ staloc:
         inc       staloc+2
         dey
         bne       staloc
-        lda       #>(SCRNBASE); load high byte
+        lda       #>(SCRNBASE)  ; Load high byte
-        sta       staloc+2    ; restore base address
+        sta       staloc+2      ; Restore base address
 
-        lda       #$00        ; cursor in upper left corner
+        lda       #$00          ; Cursor in upper left corner
         sta       CURS_X
         sta       CURS_Y
         jmp       plot          ; Set the cursor position

libsrc/osic1p/crt0.s

@@ -48,7 +48,7 @@ _init:    ldx     #$FF                 ; Initialize stack pointer to $01FF
           jsr     _main
 
 ; ---------------------------------------------------------------------------
-; Back from main (this is also the _exit entry):  force a software break
+; Back from main (this is also the _exit entry):
 
 _exit:    jsr     donelib       ; Run destructors
           jmp     RESET         ; Display boot menu after program exit

libsrc/osic1p/kbhit.s

@@ -1,11 +0,0 @@
-;
-; int kbhit (void);
-;
-; Currently a dummy function that returns always true
-
-        .export         _kbhit
-
-_kbhit:
-        lda     #$01            ; load low byte with true value
-        ldx     #$00            ; load high byte
-        rts