Programming instructions

the Teleprinter flag. The Flag is connected to the Program Interrupt and to
bit 4 of the iors instruction. The printing rate is ten characters per second.
The instructions for the printer are:
tsf - 700401 - Skip if Teleprinter flag is a 1.
tls - 700406 - Load the Teleprinter from AC bits 13-17, clear the Teleprinter
flag. Select the Teleprinter for printing.
tcf - 700402 - Clear the Teleprinter flag.
700404 - C(AC) V C(TB). Print a character.
0 10 20 30 40 50 60
70 SO 90 100
MS
Fixed*
Ref.
I
Flag 0 1
1-
TLS
Or
TCF**
Load
TB
Print
Action
Buffer Must Be Loaded By This Time
To Allow 10 Char/Set Operation
**If TCF, Flag Will Not Come On Until Next TLS Complete
*Determined By Printer
Figure 20 - Printer timing
PROGRAM SEQUENCES
/print and wait for Teleprinter
t1s
/print the character from AC bits 13-17
tsf-
/begin listen loop for printing completion
jmp.-1 /return to previous instruction or listen loop
/again
.
41