Is board silkscreen for U11 incorrect on 2063.4?

[joelburton]

The board silkscreen on U11 is '00 (suggesting a 74HCT00) --- however, the schematic/values/BOM suggests that is a 74HCT132.

Is this just a mislabel on the board? Or am I misunderstanding something significant?

[johnwinans]

The 132 is the correct part! The reason is that U11D must have a Schmitt trigger. Thanks for mentioning it. I will update the silkscreen. I recorded a video explaining the need for the Schmitt here: https://youtu.be/LDce9foQ2Ag I have been working on a playlist discussing every detail of this project here: https://www.youtube.com/playlist?list=PL3by7evD3F51Cf9QnsAEdgSQ4cz7HQZX5 This month I will be adding details on how to port CP/M onto it.

…

-John

On 3/2/22 22:12, Joel Burton wrote: The board silkscreen on U11 is |'00| (suggesting a 74HCT00) --- however, the schematic/values/BOM suggests that is a 74HCT132. Is this just a mislabel on the board? Or am I misunderstanding something significant? — Reply to this email directly, view it on GitHub <#9>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABQ6H765X4LRV6NXE777PC3U6A32XANCNFSM5PZKK2HA>. Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[johnwinans]

I updated the silkscreen. It will appear in v4rc2