greyelf@wpi.wpi.edu (Michael J Pender) (02/05/90)
I want to have a basic program execute an enhanced prodos quit call to allow loading of big system programs, like Proterm. How Do I do it? Should the high bits of the filename be set? Do I need to include the prefix in the pathname buffer? I can't seem to get it to work, it keeps doing a normal prodos quit call instead... --- Michael J Pender Jr Box 1942 c/o W.P.I. W.O.S. is not dead. greyelf@wpi.bitnet 100 Institute Rd. ...its time to get started, greyelf@wpi.wpi.edu Worcester, Ma 01609 there is much to be done.
dlyons@Apple.COM (David A. Lyons) (02/05/90)
In article <7660@wpi.wpi.edu> greyelf@wpi.wpi.edu (Michael J Pender) writes: >I want to have a basic program execute an enhanced prodos quit >call to allow loading of big system programs, like Proterm. > >How Do I do it? Should the high bits of the filename be set? >Do I need to include the prefix in the pathname buffer? > >I can't seem to get it to work, it keeps doing a normal >prodos quit call instead... The high bits of the filename should all be CLEAR. A partial pathname is sufficient--you don't need a full pathname, but you can use one if you want. You -do- need to have booted GS/OS on your machine for an enhanced QUIT call to work. (I believe this is clearly documented everywhere the enhanced QUIT call is documented.) The parameter list looks like $04, $EE, $xx, $yy, $00, $00. If it still doesn't work, show me some actual non-working code. -- --David A. Lyons, Apple Computer, Inc. | DAL Systems Apple II Developer Technical Support | P.O. Box 875 America Online: Dave Lyons | Cupertino, CA 95015-0875 GEnie: D.LYONS2 or DAVE.LYONS CompuServe: 72177,3233 Internet/BITNET: dlyons@apple.com UUCP: ...!ames!apple!dlyons My opinions are my own, not Apple's.
greyelf@wpi.wpi.edu (Michael J Pender) (02/06/90)
In article <38347@apple.Apple.COM> dlyons@Apple.COM (David A. Lyons) writes: >The high bits of the filename should all be CLEAR. A partial >pathname is sufficient--you don't need a full pathname, but you >can use one if you want. > >You -do- need to have booted GS/OS on your machine for an enhanced >QUIT call to work. (I believe this is clearly documented everywhere >the enhanced QUIT call is documented.) > I'm not using a GS. You mean to tell me that to use the enhanced prodos 8 quit call, I have to have prodos 16 in memory? How do sytem programs chain to each other then? --- Michael J Pender Jr Box 1942 c/o W.P.I. W.O.S. is not dead. greyelf@wpi.bitnet 100 Institute Rd. ...its time to get started, greyelf@wpi.wpi.edu Worcester, Ma 01609 there is much to be done.
dlyons@Apple.COM (David A. Lyons) (02/08/90)
In article <7733@wpi.wpi.edu> greyelf@wpi.wpi.edu (Michael J Pender) writes: >I'm not using a GS. You mean to tell me that to use the enhanced >prodos 8 quit call, I have to have prodos 16 in memory? Yes. (I can't guarantee that ProDOS 8 booted directly will -never- support the enhanced QUIT call, but it certainly doesn't now, as of v1.8.) >How do sytem programs chain to each other then? See chapter 5 of the _ProDOS 8 Technical Reference Manual_. Summary: store the pathname of the next program at $280. Close all open files. Clear the system bitmap so that pages 0, 1, 4-7, and $BF are protected, but all other pages are available. Read in the next program to $2000, and JMP to $2000. Note that "read in the program at $2000" is a little tricky, since you don't want to overwrite your code in the process. This means you need to copy a section of code down below $2000 for reading in the file and jumping to it. (If you put it way up close to $BF00 instead, there will be a limit to the size of a SYS file you can chain to! This is actually important, since there are programs that are that long.) Defensive programmers clean things up even more: I put the screen in 40 columns, do PR#0 and IN#0, full text window, NORMAL mode, stack pointer = $FF. >Michael J Pender Jr Box 1942 c/o W.P.I. W.O.S. is not dead. >greyelf@wpi.bitnet 100 Institute Rd. ...its time to get started, >greyelf@wpi.wpi.edu Worcester, Ma 01609 there is much to be done. -- --David A. Lyons, Apple Computer, Inc. | DAL Systems Apple II Developer Technical Support | P.O. Box 875 America Online: Dave Lyons | Cupertino, CA 95015-0875 GEnie: D.LYONS2 or DAVE.LYONS CompuServe: 72177,3233 Internet/BITNET: dlyons@apple.com UUCP: ...!ames!apple!dlyons My opinions are my own, not Apple's.
tomk@pro-grouch.cts.com (Tom Kelly) (02/09/90)
In-Reply-To: message from greyelf@wpi.wpi.edu If you want a Basic (language) program to do a enhanced quit, I can't help. If it can be a SYS file, you might try Squirt. It is what I'm using. UUCP: crash!pro-grouch!tomk ARPA: crash!pro-grouch!tomk@nosc.mil