tag:blogger.com,1999:blog-1941724879591935666.post4194983198218722928..comments2023-05-03T10:40:19.553+01:00Comments on Dave's Z80 Journey: 1101. Retail Therapy.Davehttp://www.blogger.com/profile/17357814190097545183noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-1941724879591935666.post-59190153966704936362014-02-26T20:55:54.902+00:002014-02-26T20:55:54.902+00:00I just looked at the specs, and you're right, ...I just looked at the specs, and you're right, they're only 3.3V. I've never tried the logic inputs, so this has passed me by. A good excuse to buy something better :)Davehttps://www.blogger.com/profile/17357814190097545183noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-39469611787304985222014-02-26T20:49:32.455+00:002014-02-26T20:49:32.455+00:00I was wondering about the xprotolab not being 5v t...I was wondering about the xprotolab not being 5v tolerant on its inputs. As you guessed I'd like to see what is going on with the Z80 address lines. ash_bloghttps://www.blogger.com/profile/10467176726938999697noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-48416057658396748252014-02-26T20:30:00.297+00:002014-02-26T20:30:00.297+00:00Well in reality the xprotolab can't measure fr...Well in reality the xprotolab can't measure frequencies much beyond 250KHz. However, the Z80 doesn't have to be clocked that fast to learn how it works. What is useful is that the xprotolab has 8 digital inputs which can be connected to the output control lines of the Z80 to see whats going on, although I haven't tried that yet.Davehttps://www.blogger.com/profile/17357814190097545183noreply@blogger.comtag:blogger.com,1999:blog-1941724879591935666.post-87138639183946670152014-02-26T18:03:32.205+00:002014-02-26T18:03:32.205+00:00Hi Dave, just wondering how you used the xprotola...Hi Dave, just wondering how you used the xprotolab with the 5v logic of the Z80 if that is what you used it for? <br /><br />Ashley ash_bloghttps://www.blogger.com/profile/10467176726938999697noreply@blogger.com