If you make changes on the master channel schematic nothing is updated automatically on the additional derived channels.
But unfortunately it doesn't work entirely as expected. So I RTFM and found a better explanation on page 131 of the Protel 99SE Handbook so I'm replying to my own post to stop anyone else looking it up. Hopefully someone on the forum can help me.
Apologies for the long-winded question, but I would appreciate some pointers on how to set up a multi-channel design in Protel 99SE (or advice on whether that is even possible). Other apparent problems are (1) the BOM only has parts for one instance of the channel, and (2) the Tools/Annotate/Advanced Options tab only shows the top level sheet plus the channel master sheet, rather than the top level sheet plus multiple instances of the channel master sheet. When I create a top level sheet with several sheet symbols that reference the same schematic filename I see that the nominated schematic file becomes a child of the top level sheet in the hierarchy but only one child ever appears even though the same channel master schematic is referenced by multiple sheet symbols in the top level sheet. However, I cannot find a clear set of instructions on how to actually do it successfully.
I can see this exact example of a stereo amplifier mentioned in section 5.2.1 of the Protel 99SE Training Manual under the heading "Special Cases".
Updates to the channel master schematic should then automatically update both channel instances in my design. The classic example is to draw one channel of a stereo amplifier and then invoke two instances of the same channel master schematic. That is, I want to place multiple sheet symbols on a top level sheet that reference the same schematic file and have Protel create multiple separate "channels" that are linked to one master schematic, rather than me merely duplicating the schematic and then having to manually keep all the duplicates in sync when I make changes. I'm starting to wonder if it was a feature that was planned but not actually released. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).Has anyone on the forum successfully used Protel 99SE for multi-channel design? I am not having much luck with it. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to GB9405914A priority Critical patent/GB9405914D0/en Priority to GB9405914 priority Priority to GB9503964A priority patent/GB2287808B/en Priority to GB9503964 priority Priority to US39979995A priority Priority to US48574495A priority Priority to US08/812,820 priority patent/US5724537A/en Application filed by Discovision Associates filed Critical Discovision Associates Application granted granted Critical Publication of US5724537A publication Critical patent/US5724537A/en Assigned to COASES INVESTMENTS BROS. Original Assignee Discovision Associates Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US08/812,820 Inventor Anthony Mark Jones Current Assignee (The listed assignees may be inaccurate.
Google Patents Interface for connecting a bus to a random access memory using a two wire linkÄownload PDF Info Publication number US5724537A US5724537A US08/812,820 US81282097A US5724537A US 5724537 A US5724537 A US 5724537A US 81282097 A US81282097 A US 81282097A US 5724537 A US5724537 A US 5724537A Authority US United States Prior art keywords data picture token sub decoder Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US5724537A - Interface for connecting a bus to a random access memory using a two wire link US5724537A - Interface for connecting a bus to a random access memory using a two wire link