>OK, I now have a bootable RX-50. My question is what is the difference
>between DL.SYS and DLX.SYS drivers? Is the non-x version unibus and the
>with-x version qbus or something?
The dd.SYS form of the driver is for the SB (formerly SJ) and FB
monitors (kernel, for unix weenies :-) The ddX.SYS form of the driver
is for the XM (XM, ZM, ZB) monitor(s). These last monitors are the ones
which have directives for controlling extended memory (anything beyond
64kb) and the drivers know how to get data from, and put data to, user
buffers in extended memory.
Megan Gentry
Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL | email: gentry at zk3.dec.com (work) |
| Unix Support Engineering Group | mbg at world.std.com (home) |
| Hewlett Packard | (s/ at /_at_/) |
| 110 Spitbrook Rd. ZK03-2/T43 | URL:
http://world.std.com/~mbg/ |
| Nashua, NH 03062 | "pdp-11 programmer - some assembler |
| (603) 884 1055 (DEC '77-'98) | required." - mbg KB1FCA |
+--------------------------------+-------------------------------------+
Received on Wed Jun 19 2002 - 22:41:01 BST