On Fri, Dec 22, 2023 at 2:13 PM r.stricklin via cctalk <[email protected]> wrote: > > Did IBM ever publish programming information for their PC SDLC or BiSync > communications boards? I’m wondering about the possibility of programming one > to drive the synchronous protocol needed for “booting” a Northstar Advantage > over its serial port. >
Are you looking for something beyond the low level information in the IBM Options and Adapters reference manuals? https://minuszerodegrees.net/oa/oa.htm IBM Synchronous Data Link Control (SDLC) Adapter https://minuszerodegrees.net/oa/OA%20-%20IBM%20SDLC%20Adapter.pdf IBM Binary Synchronous Communications (BSC) Adapter https://minuszerodegrees.net/oa/OA%20-%20IBM%20Binary%20Synchronous%20Communications%20Adapter.pdf
