Re: C128 Clock Stretching

From: Jeremy <earth1dome1_at_yahoo.com>
Date: Tue, 7 Mar 2017 23:05:35 +0000 (UTC)
Message-ID: <717457787.1067427.1488927935520@mail.yahoo.com>
What OS are you using to make the Commmodore 128 available on? And have you had any success with the 128 version of Vice team? Jeremyaka weirdwolf



On Monday, March 6, 2017 2:11 PM, willymanilly <william_mccabe@hotmail.com> wrote:
I've just started working on a c128 emulator and my first goal is to get the
VIC version of Risen from Oblivion (Risen from Oblivion) working. I've been
making good progress including getting the final frog screen showing
graphics in the upper/lower border with the bottom picture having phase
shifted colours but I've hit a roadblock with a couple of the earlier
effects because I'm finding it challenging to get my hands on any detailed
information on the exact timing of clock stretching for the c128. The best I
have been able to find is the obvious information that PLA, processor, and
VIC chip are involved with syncing the 2MHz clock with the 1MHz I/O chips.
If anyone can point me in the right direction with more detailed information
on the C128s implementation of clock stretching than what the C128
programmers reference guide and mapping the c128 offer, it will be much
appreciated. :) 

You can download my emulator here to see the progress I have made. ==> 
http://www.z64k.com <http://www.z64k.com>  



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