GE DATANET-30 Programming Reference Manual page 180

no longer busy. This condition can be tested via external status line 1 (NES 1). The DATANET-
30 program can now put another word in the data register and send it to the central processor.
This process repeats until the DATANET-30 program decides that sufficient words have been
transferred to the Compatibles/200 system.
The transmit example works just the reverse of receive with the exception of the DEF 2 instruc-
tion to set the CIU to the transmit mode and the DIF 1 to reset the CB 1, CB 2, and parity flip-flops.
Location Instruction Symbol OPR Operand
x
Remarks
REM TRANSMIT TO 225 VIA CIU
07640 ORG 4000 ORIGIN LOCATION 4000
07640
011031 PIC
25
PLACE CIU ADDRESS IN C
07641 026001
DIF
1
RESET CBl, 2 AND 3
07642 251747
LDT AD RESS LOAD 225 ADDRESS INTO CIU
&
SET TRANS
07643 022001
SENDWD NES 1
CIU BUSY
MODE
07644 121643
BZE i•-1 YES TRY AGAIN
07645 601653
LDB DATOUT
x
NO LOAD WORD TO BE TRANSFERRED
07646 060401
TRA B,T TRANSFER TO CIU DATA BUFFER
07647 771654
XBZ ENDWD
IS THIS THE LAST WORD?
07650 121655 BZE TEXIT
YES EXIT
07651 341653
ADO DATOUT
NO ADD ONE TO MEMORY ADDRESS
07652 101643 BRU
SENDWD GO BACK TRANSMIT NEXT WORD
07653 013560 DATOUT IND 6000
DATANET-30 OUTPUT ADDRESS
07654 777777 ENDWD OCT
777777
END WORD CONSTANT
07655 007722
TExir
IND 4050 EXIT ADDRESS
07656 001747 AD RESS IND 999 225 ADDRESS-1
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