Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!mimsy!oddjob!hao!ames!sdcsvax!ucbvax!SIMTEL20.ARPA!WANCHO From: WANCHO@SIMTEL20.ARPA ("Frank J. Wancho") Newsgroups: comp.os.cpm Subject: No-slot clocks Message-ID:Date: Thu, 23-Jul-87 01:44:00 EDT Article-I.D.: SIMTEL20.WANCHO.12320568509.BABYL Posted: Thu Jul 23 01:44:00 1987 Date-Received: Sat, 25-Jul-87 04:13:28 EDT Sender: daemon@ucbvax.BERKELEY.EDU Distribution: world Organization: The ARPA Internet Lines: 18 There are now at least three sources for "no-slot" clocks, the cheapest of which is from Radio Shack on sale for $39.95. The problem is that the software that comes with it is an executable for MSDOS. There is no source and no technical documentation on how to program it under some other environment, such as CP/M. Short of writing Radio Shack directly, does anyone have the necessary info to make it work under CP/M? *Can* it work under CP/M, or does it take advantage of some MSDOS peculiarity? For those unfamiliar with these no-slot clocks (probably somebody's trademark), it is a clock/calendar chip and a lithium battery wedged into the cavity of a PROM socket and meant to be sandwiched between an existing ROM and its socket, or simply plugged into any empty 28-pin ROM socket you may have available. Seems to simple to be true...considering that I have a whole S-100 card devoted to apparently the same function... --Frank