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4fdb179dfc
- pdp11_sequencer.vhd: CPUERR cleared by CRESET - mminki.mac: added, procedure to initialize MMU, kernel I space only - test_w11a_cpuerr.tcl: added, test cpuerr register - added more README's - editorial changes
47 lines
1.7 KiB
Plaintext
47 lines
1.7 KiB
Plaintext
; $Id: mminki.mac 831 2016-12-27 16:51:12Z mueller $
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; Copyright 2016- by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
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; License disclaimer see License.txt in $RETROBASE directory
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;
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; Initialize MMU, kernel I space only
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; Call:
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; jsr pc, mminki
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; Arguments:
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; none
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; Expected includes:
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; lib/defs_mmu.mac
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;
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; All registers preserved
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;
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mminki:
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mov r0,-(sp) ; save regs
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mov r1,-(sp)
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;
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mov #kipdr,r0 ; kerel I space DR
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mov #077406,r1 ; slf=127; ed=0(up); acf=6(w/r)
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;
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mov r1,(r0)+ ; kipdr(0)
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mov r1,(r0)+ ; kipdr(1)
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mov r1,(r0)+ ; kipdr(2)
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mov r1,(r0)+ ; kipdr(3)
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mov r1,(r0)+ ; kipdr(4)
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mov r1,(r0)+ ; kipdr(5)
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mov r1,(r0)+ ; kipdr(6)
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mov r1,(r0)+ ; kipdr(7)
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;
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mov #kipar,r0 ; kernel I space AR
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;
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mov #000000,(r0)+ ; kipar(0): 200 000000 base
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mov #000200,(r0)+ ; kipar(0): 400 020000 base
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mov #000400,(r0)+ ; kipar(0): 600 040000 base
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mov #000600,(r0)+ ; kipar(0): 1000 060000 base
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mov #001000,(r0)+ ; kipar(0): 1200 100000 base
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mov #001200,(r0)+ ; kipar(0): 1400 120000 base
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mov #001400,(r0)+ ; kipar(0): 1600 140000 base
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mov #177600,(r0)+ ; kipar(0): 177600 (map to I/O page)
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;
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mov (sp)+,r1 ; restore regs
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mov (sp)+,r0
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;
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rts pc
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