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Post by mrbombermillzy on May 16, 2016 19:23:24 GMT
Whilst I appreciate the kind offer Robert, I wouldn't dream of putting someone out by having them transport old disk drives for me in their holiday luggage!
However, it would be nice to have a proper 1571 :-)
I'm sure the easiest option is for me to just get hold of a UK spec 1571 at some point from e/amibay... or better still, just change the room around so my C128DCR is next to the PC.
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Post by mrbombermillzy on May 15, 2016 10:37:26 GMT
Thanks Robert. Does he frequent this forum?
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Post by mrbombermillzy on May 14, 2016 17:27:00 GMT
I've seen the US 110v direct replacement boards for the C128 DCR. However, does anyone know of a UK spec PSU available anywhere, before I try to do my own thing with some 12/9v plug in wall chargers?
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Post by mrbombermillzy on May 14, 2016 16:55:42 GMT
I actually try to pick up any 5.25" drives that I come across just in case I can use them for replacement 1541/71 mechanisms if I ever need to. I currently have an Amstrad unit (which I believe was made as an external unit for the PCW and/or CPC+ range) along with a 1541 and a 1570. None of which are any use in making .d71 disks with though, especially as I only have C128DCR's with built in controller boards.Its a bit of a pain but... oh well.
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Post by mrbombermillzy on May 13, 2016 5:29:12 GMT
I'm in the UK.
Photos would be great.
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Post by mrbombermillzy on May 12, 2016 16:49:15 GMT
Ive never come across a 1571 clone. I wish there were more 1571 drives in circulation. Its a real pain trying to get c128 disks (d.71) to the 128 when I only have a 1541 with the XM cable and the internal 1571 on my 128 d. I know I can use the cable with my 128 but its at the other end of the room! Got any photos Robert? Maybe knowing who the mechanism is made by can help us all know which drive mechanisms we can use with the 1571 logic board.
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Post by mrbombermillzy on May 3, 2016 17:35:10 GMT
Your cga>vga converter looks to be cancelling out the interlace flicker. Thats a good thing although you cant really tell if its in interlace mode or not (although it is if you have set register 8 to 253/4). I would try one of the vdc interlace demos to see how well the converter card deals with the interlaced images.
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Post by mrbombermillzy on May 2, 2016 18:56:42 GMT
Well done :-) I gather that the screen pictures as they go up have more refresh time applied? So what resolution was this? (Please don't make me count the characters in the photos...my poor eyes!)
You will get 'proper' interlace by setting it to either 254 or 253. I can't remember offhand which one. One of the settings is line doubling mode and the other is true interlace.
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Post by mrbombermillzy on Apr 30, 2016 20:37:24 GMT
The problem, in a nutshell, is getting 1024 horizontal pixels at a 15khz scan rate. It is pretty much at the limit timing wise of a crt monitor. Some monitors handle this stuff better than others.
If you want to attempt higher resolutions as safely as possible, then go up gradually. Try a slightly higher resolution then check for any high pitched noises or jittering on the display. If its OK, then go to the next resolution. Also leave the v. Res at 200 for now to minimise strain.
As for what could go wrong with the monitor.. I don't really know mirko, not being a TV engineer. On my Aydin Ranger, the horizontal deflection failed (It basically draws everything in a single pixel wide line vertically on the screen). To be fair I hadn't found the safe boundaries and was pushing forward with 'bad' settings. (You can't find the limits until you pass them). So I've basically tried to help you in that area so you don't have to do any wildly wrong settings. Other than that, its up to you.
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Post by mrbombermillzy on Apr 30, 2016 19:42:35 GMT
If you are getting OK results with your 1084 at 800x600 then I would be pretty sure that its either your cga to VGA converter and/or the monitor you are using it with (is it a flat screen or crt VGA monitor?).
My next step if your 1084 handled 800x600 well would be to suggest the next resolution up and see how it goes, but I respect your choice of not wanting to risk ruining your monitor.
Like I said before, perhaps we need to settle on a safe standard resolution that ALL our monitors can handle...800x600 is a pretty good place to stop :-)
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