Dynacomp, Inc. Adventure International  Color Software
6 Rippingale Rd. Box 3435 5410 W. 20th St.
Pittsford, NY 14534  Longwood, FL 32750  Indianapolis, IN 46224
Cassette $9.95 24K - Disk 113.95 32K  Cassette $14.95  Cassette $15.00 24K



From: Basic Computer Games (No. 6C)  Quality Software
Creative Computing 6660  Reseda Blvd., Suite 105
P.O. Box 789-M  Reseda, CA 91335
Morristown, NJ 07960  Cassette $11.95 24K - Disk $14.95 32K
*(must be converted for Atari) - $7.50 Book


THE ATARI 810 & DOS 11

The ATARI 8 10 Disk Drive is now supported by the release of the Disk Operating System Reference Manual made available last fall. New drives should be coming through with this manual. A new version of DOS; DOS II, Version 2S, will be available soon for the 810. This new version has a number of differences over the original DOS. DOS II takes up less memory, as it doesn't reside in RAM along side your BASIC or ASSEMBLY language program. When you type in the DOS command, your program in RAM is swapped to a file on diskette - the "MEM.SAV" file. Then DOS is put in RAM for your use. Type "B" and DOS is erased from RAM, and your program is put back in RAM. This allows you to use more RAM for programming rather than have DOS use up 9 or 10 K. DOS 11 does away with the 'N. DEFINE DEVICE' function. 'N' will now create a new "MEM.SAV" file on diskette. You also won't have to return to the MENU on DOS after you execute a command, you can just type in a new command, or hit 'RETURN' for the MENU listing. The four files comprising DOS 11 are: DOS.SYS, DUP.SYS, MEM.SAV, & AUTORUN.SYS. Also, some formatting on DOS 11 is not interchangable with DOS 1. You can run into difficulty renaming a DOS I formatted diskette on DOS 11 (the file name storage differs slightly). DOS 11 supports the point/random access functions on disk now. You may notice how reliable your disk drive is in the way it never loses data transferring from diskette to RAM or visa versa. When data is taken to or from diskette, a 'counter' checks to see that the number of bits transferred matches what was originally in the file or program. *Note that when the final version of DOS 11 is released, some of what has been described may change.