Subject: RE: [personal] [stella] Clock Skew, redux From: "C. Bond" <cbond@xxxxxxxxxxxxx> Date: Thu, 30 Jun 2005 20:21:21 -0400 |
Thanks Dan. As I mentioned, the 650x data sheet does not cover this. The TIA docs indicate something like 150nsec!--but your measurement sound very close to what I would expect. C. Bond -----Original Message----- From: Dan Boris <dboris@xxxxxxxxxxx> Sent: Jun 30, 2005 3:23 PM To: stella@xxxxxxxxxxxxxxxxxx Subject: RE: [personal] [stella] Clock Skew, redux If my measurements are correct (haven't actually measured anything with a scope in quite a few years), then it appears the Phase 0 leads Phase 2 by .02us. The Phase 0 signal isn't to clean so it's hard to get a really accurate point to measure from. Now that I have everything setup let me know if you need anything else measured. Dan > -----Original Message----- > From: C. Bond [mailto:cbond@xxxxxxxxxxxxx] > Sent: Thursday, June 30, 2005 11:20 AM > To: stella@xxxxxxxxxxxxxxxxxx > Subject: [personal] [stella] Clock Skew, redux > > > I was hoping that someone would have the means and > inclination to measure the delay between the 6507 Phase0 and > Phase2 clocks. This delay time seems to have been omitted > from the 650x family of data sheets. Since the 6502 has the > same clock generator as the 6507, maybe someone could measure > it on a Kim-1 or other single board system and post the results. > > Thanks, > > C. Bond > > P.S. I'm simulating a TIA and need the nominal delay to > check boundary conditions between the CPU Phase2, which > strobes latches, and the divide-by-four clock, which runs > the TIA circuits. > > -- > Democracy: The triumph of popularity over principle. > -- > http://www.crbond.com > > > Archives (includes files) at > http://www.biglist.com/lists/stella/archives/ > Unsub & more at > http://stella.biglist.com > > Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://stella.biglist.com Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://stella.biglist.com
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