-----Original Message----- From: Dave Hooper <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Date: 22 February 1999 15:54 Subject: Re: Unorthodox Frame Sync
>call me mental, but that doesn't seem very unorthodox at all (it's the way >i've always done it, anyway). It's a shame if this doesn't work under >simcoupe (maybe the HPEN update code is buggy?) It's not the use of HPEN to do the actual frame-sync that's unorthodox, but the way I'm calculating 'missed frames' without resorting to LINE INT's. Or perhaps it's not? Who knows! It works, anyway! ;-) I'm not sure about Simcoupe though. I get sporadic bursts of 'flat out' motion, equal to no frame-sync wait. This is especially noticeable in calmer moments, when you've lost all the humans and are 'out in space' for example. It seems to think a frame has been missed, when in fact it hasn't. It looks like Simcoupe's HPEN update timing is probably a little out? Could be the actual amount of time HPEN stays in the border area with regards to a real SAM? Chris.
