File NULL8A.PA (PAL assembler source file)

Directory of image this file is from
This file as a plain text file

/2	NULL JOB FOR PDP8-A RUNNING RTS-8
	VERS=	1
	XLIST	1		/COPYRIGHT ALSO GIVEN IN PARAM.PA
/
/
/
/
/
/
/
/
/
/COPYRIGHT  (C)  1976 BY DIGITAL EQUIPMENT CORPORATION
/
/
/
/
/
/
/
/
/
/
/THE INFORMATION IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE
/AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT
/CORPORATION.  DIGITAL EQUIPMENT CORPORATION ASSUMES NO RESPONSIBILITY
/FOR ANY ERRORS THAT MAY APPEAR IN THIS DOCUMENT.
/
/THE SOFTWARE DESCRIBED IN THIS DOCUMENT IS FURNISHED TO THE PURCHASER
/UNDER A LICENSE FOR USE ON A SINGLE COMPUTER SYSTEM AND CAN BE COPIED
/(WITH INCLUSION OF DIGITAL'S COPYRIGHT NOTICE) ONLY FOR USE IN SUCH
/SYSTEM, EXCEPT AS MAY OTHERWISE BE PROVIDED IN WRITING BY DIGITAL.
/
/DIGITAL EQUIPMENT CORPORATION ASSUMES NO RESPONSIBILITY FOR THE USE
/OR RELIABILITY OF ITS SOFTWARE ON EQUIPMENT THAT IS NOT SUPPLIED BY
/DIGITAL.
/
/
/
/
/
/
/
/
/
/
	XLIST	0	/LIST TASK
/S.R.	NOVEMBER 1975
/S.R.	OCTOBER, 1976
/	EQUALIZED TIMING

	TASK=NULL8A
	INIWT=0
	CUR=10
	FIELD CUR%10

	*3600


START,	TAD (DIGS
	DCA PTR
BUMPLP,	ISZ I PTR	/BUMP
	TAD I PTR
	TAD (-12
	SZA CLA
	JMP SET
	DCA I PTR	/BACK TO 0
	ISZ PTR
	JMP BUMPLP
SET,	DCA DIGS+4
	DCA A
	DCA B
	TAD (-4
	DCA KNT
	TAD (DIGS+3
	DCA PTR
SETLP,	TAD I PTR
	TAD (TBL1
	DCA P1
	TAD I PTR
	TAD (TBL2
	DCA P2
	TAD A
	CLL RAL
	RTL
	TAD I P1
	DCA A
	TAD B
	CLL RTL
	RAL
	TAD I P2
	DCA B
	STA
	TAD PTR
	DCA PTR
	ISZ KNT
	JMP SETLP
	TAD A
	CIA
	TAD B
	DCA BMINA
	TAD BMINA
	CIA
	DCA AMINB
	TAD (-20
	DCA KNT
	ISZ MQNUM
	TAD MQNUM
	7421
	CLA		/JUST IN CASE
	TAD A
LOOP,	TAD BMINA
	ISZ DUMMY
	NOP
	TAD AMINB
	ISZ INNER
	JMP LOOP
	ISZ KNT
	JMP LOOP
	CLA
	JMP START

DIGS, 0;0;0;0;0 MQNUM, 0 DUMMY, 0 PTR, 0 A, 0 B, 0 AMINB, 0 BMINA, 0 KNT, 0 P1, 0 P2, 0 INNER, 0 /8=6+7 /9=7+4 TBL1, 0;1;2;3;4;5;6;7;7;7 TBL2, 0;1;2;3;4;5;6;7;6;4 $



Feel free to contact me, David Gesswein djg@pdp8online.com with any questions, comments on the web site, or if you have related equipment, documentation, software etc. you are willing to part with.  I am interested in anything PDP-8 related, computers, peripherals used with them, DEC or third party, or documentation. 

PDP-8 Home Page   PDP-8 Site Map   PDP-8 Site Search