Potential issues seen, comments added

software/asm/cbios_bank4.asm

@@ -251,6 +251,7 @@ SETDRV2:    LD      (DISKTYPE),A
             LD      A,(HL)                                               ; Get the physical number after mapping from the CDISK.
             POP     BC
             POP     HL
+;CHECK THIS TYPO AND REMOVE SEEMS A COPY PASTE ERROR
             RET     NC                                                   ; This isnt a physical floppy disk, no need to perform any actions, exit.
 
             ; Select FDC drive (make active) based on value in DISKMAP[CDISK].

software/asm/rfs_bank3.asm

@@ -355,6 +355,8 @@ GETCMTPARM: CALL    READ4HEX                                             ; Start
             LD      C,L
             CALL    READ4HEX                                             ; End address
             JR      C,GETCMT1
+            SBC     HL,BC
+            INC     HL
             LD      (SIZE),HL                                            ; byte size buffer
             CALL    READ4HEX                                             ; Execution address
             JR      C,GETCMT1