From: utzoo!decvax!ucbvax!C70:info-cpm Newsgroups: fa.info-cpm Title: [RGF: submit with printer control] Article-I.D.: ucb.1602 Posted: Sun Jul 25 23:21:15 1982 Received: Thu Jul 29 05:19:04 1982 >From RGF@Mit-Mc Sun Jul 25 23:20:44 1982 Date: 25 July 1982 23:38-EDT From: Ronald G. FowlerSubject: submit with printer control To: reece at NADC cc: RGF at MIT-MC Jim, the "^P" feature of CP/M is a "real-time" function...that is, the ^P is trapped immediately after calling BIOS for a character; if the BIOS is not called, the function is not activated (as is the case from within a SUBMIT file). The only way to activate it in a batch stream would be to determine where the BDOS keeps its "printer on" flag, then manually set it from within a special transient you'd have to write. This transient would, of course, be version dependant, since the location would change from one assembly of BDOS to the next. For you information, the flag is located BDOS base +030DH. Thus, the following code should set the flag (this is *not* tested!): LHLD 6 ;find BDOS LXI D,030DH ;offset to LISTCP DAD D MVI M,1 ;turn it on. (MVI M,0 to turn off). If you need a toggle, change the "MVI M,1" to "MOV A,M ! XRI 1 ! MOV M,A". Note that these locations are for CP/M 2.2 and will not work under any other version. Further, they won't work under DDT or SID, since the address field at 6 is modified by these programs. --Ron Fowler