📄 cira.cmd
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!
! CI PORT BOOT COMMAND FILE - CIRA.COM
! BOOT FROM CI
!
! THE DESIRED STATION ADDRESS OF REMOTE PORT MUST BE SET IN REGISTER 2
! AND
! THE UNIT NUMBER MUST BE SET IN REGISTER 3 BEFORE EXECUTING THIS PROCEDURE.
!
HALT ! HALT PROCESSOR
UNJAM ! UNJAM SBI
INIT ! INIT PROCESSOR
DEPOSIT/I 11 20003800 ! SET UP SCBB
DEPOSIT R0 20 ! CI PORT DEVICE
DEPOSIT R1 E ! CI TR=E
DEPOSIT R4 0 ! BOOT BLOCK LBN (UNUSED)
DEPOSIT R5 1000B ! SOFTWARE BOOT FLAGS
DEPOSIT FP 0 ! SET NO MACHINE CHECK EXPECTED
START 20003000 ! START ROM PROGRAM
WAIT DONE ! WAIT FOR COMPLETION
!
EXAMINE SP ! SHOW ADDRESS OF WORKING MEMORY+^X200
LOAD VMB.EXE/START:@ ! LOAD PRIMARY BOOTSTRAP
START @ ! AND START IT
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