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Post by Pyrofer on Apr 23, 2017 17:24:24 GMT
Depends on the current draw for the fan and the power budget on the PSU. I assume there is a bit spare on the PSU even when it's all running flat out so as long as it's a low power fan there should be no problem at all.
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Post by Pyrofer on Apr 23, 2017 10:39:35 GMT
That image isn't working for me.
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Post by Pyrofer on Apr 15, 2017 19:35:56 GMT
The idea of using a DB9 switch box sounds good, as long as it breaks all the lines and does break before make it should be fine.
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Post by Pyrofer on Apr 15, 2017 10:41:05 GMT
You mention the 2Mhz and then the VIC-IIe. You can't use 2Mhz when displaying the VIC screen. You would have to use the VDC for that or a border hack to get about 1.4Mhz.
Z80, VDC and 2Mhz would all work and as you say, no pause during screen refresh but you would have the slower VDC access to begin with. Swings, meet roundabouts.
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Post by Pyrofer on Apr 15, 2017 10:38:44 GMT
The bus has pullups on it. You would end up feeding 5v INTO the "off" computer this is not good.
I would say you need a multipole switch. You also need to be careful with ground as you will essentially be connecting different ground levels (2 PSUs) together.
You want a full multipole break before make switch for this and nothing less. That or a complex logic device that interfaces on the bus like the digital printer switches of old.
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Post by Pyrofer on Apr 9, 2017 9:49:24 GMT
I assume it uses the fast mode and blank screen? Is this automatic in the game or do you need a special version? I burned an eprom for it and have it on cartridge, so it's kinda hard to update now
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Post by Pyrofer on Apr 4, 2017 10:46:42 GMT
Funny that Spy Hunter was mentioned. I actually made a bit of progress with that. I had a smooth scrolling multicolour bitmap road. I was working on making the "sprite" but as with all my VDC code, that is where I have paused
I might have another go at it so I can make a video for you showing the scrolling road and (stationary for now) cars.
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Post by Pyrofer on Mar 29, 2017 7:32:44 GMT
Tokra did some great work getting a VGA compatible output from the VDC however he had to lower the horizontal resolution.
If we could push the 128 to even match the original 640 and output 31khz that would be amazing! It would then be possible to hack 80 col software to work native on VGA monitors with as little as a few resistors to connect to the 128 (minimum). I love seeing all this work pushing it to it's limits.
I would be exceedingly interested in any further work on using VGA monitors without scanrate conversion.
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Post by Pyrofer on Mar 27, 2017 22:52:26 GMT
It's not atm. Been busy with work, trying to assemble video adapters and family life.
I need to sit down and spend a lot of time working out my software sprite code. I need to be able to shuffle bits around. The idea is to have a 4 character tile and be able to position it pixel by pixel in a 9 character "sprite"
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Post by Pyrofer on Mar 27, 2017 7:02:55 GMT
This is great work. Are you going to put it into interlace and push the 200 a little higher too?
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