Xref: utzoo comp.sys.ibm.pc.programmer:1330 alt.msdos.programmer:1590
Path: utzoo!utgpu!news-server.csri.toronto.edu!torsqnt!tmsoft!mshiels
From: mshiels@tmsoft.uucp (Michael A. Shiels)
Newsgroups: comp.sys.ibm.pc.programmer,alt.msdos.programmer
Subject: Re: which timer interrupt?
Message-ID: <j45cvma7f@tmsoft.uucp>
Date: 5 May 90 11:07:27 GMT
References: <484@wjh12.harvard.edu>
Reply-To: mshiels@tmsoft.UUCP (Michael A. Shiels)
Distribution: na
Organization: MaS Network Software and Consulting
Lines: 6

All of my utilities hook 8 and first call the old 8 then they sit
in a semaphored section donig there stuff.

This was because way back a lot of TSRs didn't chain to the old int 1C handler
so all of a sudden you lost touch with timer ticks.  Everyone passes 8 on
or your machine would lose track of time.