Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!us.feeder.erje.net!xmission!news.bbs-scene.org!macgui.com!dog_cow From: D Finnigan Newsgroups: comp.sys.apple2.programmer Subject: Multitasking Mouse Draw Demo v1.1 Date: Tue, 25 Feb 2014 20:57:52 +0000 (UTC) Organization: Mac GUI Lines: 30 Message-ID: NNTP-Posting-Host: gunshin.wiredns.net Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Trace: technocratmedia-w1.news.bbs-scene.org 1393361872 19859 74.119.145.48 (25 Feb 2014 20:57:52 GMT) X-Complaints-To: abuse@bbs-scene.org NNTP-Posting-Date: Tue, 25 Feb 2014 20:57:52 +0000 (UTC) User-Agent: Mac GUI Usenet Xref: csiph.com comp.sys.apple2.programmer:1167 Multitasking Mouse Draw Demo v1.1 24 Feb 2014 Changes to system since version 1.0: - Individual Process Priority table - Sleeping process table - NEWPROC is now a generalized system call and can be used within processes - NEWPROC is changed to accept a process priority in the Y-register - System now allows as many as 6 total processes - Context switch optimization for when there is only 1 process - CREATEALL only creates initial process 0 with priority of $16 - New SLEEP system call allows processes to temporarily suspend execution Changes to processes since version 1.0: - There are now 4 total processes - New process 3: follows mouse presses and plots coordinates on text screen - Process 0 now creates processes 1, 2, and 3 - Process 1 has a lower priority and calls YIELD after each plot - Process 1 calls SLEEP for 8 cycles after plotting an entire row - Process 2 has the lowest priority - Process 2 calls SLEEP for 4 cycles before it begins plotting -- ]DF$ Apple II Book: http://macgui.com/newa2guide/ Usenet: http://macgui.com/usenet/ <-- get posts by email! Apple II Web & Blog hosting: http://a2hq.com/