Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!decvax!harpo!seismo!hao!hplabs!sri-unix!strom@brl-bmd From: strom%brl-bmd@sri-unix.UUCP Newsgroups: net.micro.cpm Subject: SETDRU Message-ID: <16739@sri-arpa.UUCP> Date: Sat, 11-Feb-84 08:01:11 EST Article-I.D.: sri-arpa.16739 Posted: Sat Feb 11 08:01:11 1984 Date-Received: Mon, 20-Feb-84 02:11:48 EST Lines: 23 From: Charlie Strom (NYU)Another solution to the problem of multiple overlays is a program called SETDRU, authored by Mike Rubenstein. SETDRU is a BDOS filter which allows remapping of up to 8 file specifications (unambiguous or ambiguous) so that a program can access any other files on any drive/user. This works very well with Wordstar, and allows me to have a small (<1K) program called EDIT.COM on my ZCPR2 root du. Invoking EDIT will call Wordstar which could be on any other du as well as its overlays which could be on the same or yet another du. If ZCPR is not installed, one must have multiple copies of EDIT.COM, but not of WS or its overlays. SETDRU actually consists of a user interface and two filters, one that allows the filter to be bound to the .COM program of interest and another which calls the program. The latter is required for programs such as WS that test its integrity after re-entry from the R command. SETDRU is in Z80 code. I will be completing an 8080 conversion in a few days and will upload relevant files to Simtel at that time and will post a notice to the list. I have run this program successfully under CP/M Plus as well as 2.2.