User`s manual

5
.INCHR
5-7
5System Calls
.INCHR
Name
.INCHR - Input character routine
Code
$0000
Description
.INCHR reads a character from the default input port. The
character is returned in the LSB of R03.
Entry Conditions
None
Exit Conditions Different From Entry
R03: bits 7 through 0 contain the character returned
R03: bits 31 through 8 are zero.