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System clock frequency?   Message List  
Reply | Forward Message #124 of 188 |
I'm porting ZX01 to the Altium NanoBoard.
<http://members.iinet.net.au/~msmcdoug/pace/Nanoboard/nanoboard.html>

Trying to figure out the 'clock' frequency to feed into the zx01xr
entity. By my quick calculations it should be 6MHz??? But I'm not
getting any video output.

Can someone tell me what it should be?

Regards,
Mark







Wed Jul 5, 2006 12:41 pm

tcdevelop
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Message #124 of 188 |
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I'm porting ZX01 to the Altium NanoBoard. <http://members.iinet.net.au/~msmcdoug/pace/Nanoboard/nanoboard.html> Trying to figure out the 'clock' frequency to...
Mark McDougall
tcdevelop
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Jul 5, 2006
1:14 pm

6.5 is what I use, not sure if different for ntsc, I would have thought it would still give something. Is it no video on the screen or no logic output at all? ...
Andrew McMeikan
andrewmuck
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Jul 5, 2006
2:18 pm

... Thanks - it would seem 6.5MHz is indeed the correct frequency, however I am still getting no video output. Under simulation I'm getting hsync and vsync at...
Mark McDougall
tcdevelop
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Jul 7, 2006
10:18 am

Can be several seconds depending on how much ram. If only 1k of ram it is pretty fast. cya, Andrew......
Andrew McMeikan
andrewmuck
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Jul 8, 2006
2:04 am

... Still can't find the problem - it's just not generating video data... :( Is anyone running with the *latest* release of T80? i.e. running with 'T80se'...
Mark McDougall
tcdevelop
Online Now Send Email
Jul 12, 2006
2:00 pm
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