86-DOS 0.33

86-DOS 0.33 is the second release of 86-DOS. It was shipped with 2 manuals, the 86-DOS Version 0.3 Programmer's Manual and the 86-DOS Version 0.3 User's Manual.Watzman, Barry (14 August 2007). Imsai 8080. PC Review.Watzman, Barry (4 November 2003). Wanted: SCP 86-DOS & CP/M-86 PRELIMINARY RELEASE. comp.os.cpm.
The version number for this build is mentioned in David Hunter's 1983 interview with Tim Paterson, published in Softalk for the IBM PC. Paterson noted the lack of variable sector record sizes in this version and ones before it.Hunter, David (March 1983). The Roots of DOS: Tim Paterson. Softalk for the IBM Personal Computer. p. 12-15. The feature would be added in 86-DOS 0.42.Microsoft. MS-DOS 1.25 and 2.11 Source Code. Computer History Museum.
==New features==
According to the manuals, a lot of changes have happened since 86-DOS 0.11.
===System===
*The default stack pointer for user programs has been changed from 40H to 5CH.
** is now accepted as a wildcard character, and therefore no longer a legal filename character.
===Command Interpreter===
*File sizes are now displayed alongside filenames when the DIR command is performed.
===CHKDSK===
CHKDSK has been added. It scans the directory of the default or specified disk for consistency, attempts to fix errors if found, reports the number of files on disk, the size of the disk, remaining capacity of the disk and the amount of free RAM.
===DEBUG===
DEBUG has been added. DEBUG was originally the SCP 8086 Monitor ROM used by SCP's 8086 CPU Support Card, but was later converted to a DOS executable and added to the operating system.Sedory, Daniel (2 August 2020). A Guide to DEBUG. The Starman.Paterson, Tim (4 August 2018). VCF West XIII -- Tim Paterson -- Original DOS and the old days. Vintage Computer Federation. DEBUG is executed with a command of the form DEBUG <filename>. DEBUG will load the specified file at 0x100 in the lowest available segment, and CX will be set to the number of records loaded. DEBUG commands are available to display, alter and search memory; to do inputs and outputs; to read and write disk files or physical sectors; and to aid in debugging 8086 programs.
===MAKRDCPM===
MAKRDCPM modifies RDCPM to allow reading CP/M disks of different/custom format(s). It takes a file containing the new drive parameter table and merges it into RDCPM.COM.
==Barry Watzman disk==
comp.os.cpm newgroup member Barry Watzman (May 26, 1949 – May 17, 2010)Barry A. Watzman Obituary. Dignity Memorial.Dunkel, Tom (6 June 2010). Cautionary Tale: A Killing in the Stock Market. AOL News. ownedWatzman, Barry (22 July 2009). Images of Seattle Computer Proudcts (SCP) S-100 boards. comp.os.cpm. and subsequently attempted to sell five Seattle Computer Products floppy disks,Watzman, Barry (6 August 2009). I did it. I have really gone and done it.. comp.os.cpm. including an 86-DOS 0.33 disk. Watzman bought the 8-inch diskette directly from Seattle Computer Products after seeing an advertisement in the BYTE magazine. Along with the operating system and the manuals that came with it, he also bought SCP's S-100 system, including the hardware used inside the Gazelle and the Tarbell double-density disk controller.Watzman, Barry (23 April 2005). Where things appear to be going..... comp.os.cpm.Watzman, Barry (1 April 2005). cp/m and new computers. comp.os.cpm.Watzman, Barry (29 June 2009). netbooks--1 GB Ram and XP-Why?. comp.sys.laptops.
==Notes==
==References==
Category:86-DOS versions
Category:Unleaked builds