Routines
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02548: THE 'PRINT-OUT' ROUTINES
Used by the routines at ED_COPY and OUT_FLASH.
The address of this routine is found in the initial channel information table.
All of the printing to the main part of the screen, the lower part of the screen and the printer is handled by this set of routines.
This routine is entered with the A register holding the code for a control character, a printable character or a token.
Input
A Character code
PRINT_OUT 02548 CALL PO_FETCH The current print position.
02551 CP " " If the code represents a printable character then jump.
02553 JP NC,PO_ABLE
02556 CP 6 Print a question mark for codes in the range 0 to 5.
02558 JR C,PO_QUEST
02560 CP 24 And also for codes 24 to 31.
02562 JR NC,PO_QUEST
02564 LD HL,2571 Base of the control character table.
02567 LD E,A Move the code to the DE register pair.
02568 LD D,0
02570 ADD HL,DE Index into the table and fetch the offset.
02571 LD E,(HL)
02572 ADD HL,DE Add the offset and make an indirect jump to the appropriate subroutine.
02573 PUSH HL
02574 JP PO_FETCH
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