Mark Pizzolato bdb021e6ac Massbus VAXen and PDP11: Cleanup RP device to allow simple replication ...

Peter Allan analyzed the source code for the VAX780 simulator and
came up with a somewhat simple strategy to replicate the RP device
source code and to add another controller on an additional Massbus.

That initial strategy includes: Copying the pdp11_rp.c source module to
pdp11_rpb.c and making almost all global variables static as well as all
internal functions used in the RP device. All but the "DEVICE rp_dev",
that is, which now becomes "DEVICE rpb_dev" with a name of "RPB".

The change process was relatively simple although somewhat tedious and
wouldn't easily lend itself to manage future changes that might happen to
pdp11_rp.c.

The changes in this commit cleanup pdp11_rp.c so that changing it to
pdp11_rpb.c only need to affect 3 lines of code which will simplify
future maintenance of these modules.

2023-05-22 10:10:58 -10:00

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