mirror of
https://github.com/DoctorWkt/unix-jun72.git
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- Added the boot stuff from James.
We may want to move the location of the various files at some point, but I wanted to make sure it got into the svn.
This commit is contained in:
tim.newsham
47
boot/README
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47
boot/README
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UNIX V1 bootstrap
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The UNIX V1 bootstrap procedure is described in UNIX_ProgammersManual_Nov71.pdf,
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section BOOT PROCEDURES (VII).
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To install the bootstrap and kernel, prior to running the V1 system, use
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the boot/installboot command. This will install the bos program as well
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as the recently-built kernel from build/loadfile into the warm boot area
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of the rf0 disk:
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boot/installboot
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The system can be warm booted with:
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tools/pdp11 boot/simh.cfg
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Alternatively, everything can be installed while running under the V1 system
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using the following procedure:
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First, build the support programs: bos and msys
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chdir /usr/boot
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sh run
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Install the bootstrap and unix:
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msys b bos
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msys u wunix
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If you build a kernel under V1, then you can install it into the warm
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boot area with:
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msys u name_of_kernel
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You can install it into the cold boot area (such as for testing) with:
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msys 1 name_of_kernel
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The default installation does not copy an image into the cold boot area.
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However, if the cold boot area is being used for testing new kernels,
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then the kernel can be bootstrapped using:
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tools/pdp11 boot/simh_cold.cfg
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NOTE: the 32W bootstrap normally resides at location 173700, but because the
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simulator does not have memory at that location, the current bootstrap is
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copied into 073700 in the simulator. This does not change the behavior at all.
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22
boot/installboot
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22
boot/installboot
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#!/bin/sh
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RF0IMAGE=rf0.dsk
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KERNEL=build/loadfile
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BOS=boot/bos
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if [ ! -f $KERNEL ]
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then echo "You must build the kernel, $KERNEL, before you can install"
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echo "the bootstrap."
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exit 1
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fi
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# Install bos 32KW below the top of the rf0 image
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#
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dd if=$BOS of=$RF0IMAGE bs=512 seek=960
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# Install Unix in the warm boot area, 31KW below the top of the
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# rf0 image. Because the kernel is in simh load format, the first
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# 6 bytes are skipped and the following 16K byte are copied onto
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# the rf0 disk.
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#
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dd if=$KERNEL bs=1 skip=6 count=16384 | dd of=$RF0IMAGE bs=512 seek=964
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BIN
boot/m792low.load
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BIN
boot/m792low.load
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Binary file not shown.
30
boot/m792low.s
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30
boot/m792low.s
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/ UNIX bootstrap ROM, based on BOOT PROCEDURES (VII) 11/3/71
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. = 73700
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/ 173700 -- load bos from 1700000 of rf0 (RF11)
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mov $177472,r0
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mov $3,-(r0) / rf11.dae.ta[6:5] = 3
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mov $140000,-(r0) / rf11.dar = 140000
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mov $54000,-(r0) / rf11.cma = 54000
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mov $-2000,-(r0) / rf11.wc = -2000 (1K words)
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mov $5,-(r0) / rf11.dcs = read,go
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tstb (r0) / done?
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bge .-2 / no, loop
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jmp *$54000 / jump to bos
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/ 173740 -- load from tap0 (TC11 DECtape)
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mov $177350,r0
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clr -(r0) / tc11.tcba = 0
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mov r0,-(r0) / tc11.tcwc = 177346 (282. bytes)
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mov $3,-(r0) / tc11.tccm = rnum,do
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tstb (r0) / done?
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bge .-2 / no, loop
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tst *$177350 / block 0?
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bne . / no, loop forever
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movb $5,(r0) / tc11.tccm = rdata,do
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tstb (r0) / done?
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bge .-2 / no, loop
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clr pc / jump to location 0
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BIN
boot/m792uv1.load
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BIN
boot/m792uv1.load
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Binary file not shown.
30
boot/m792uv1.s
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30
boot/m792uv1.s
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/ UNIX bootstrap ROM, based on BOOT PROCEDURES (VII) 11/3/71
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. = 173700
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/ 173700 -- load bos from 1700000 of rf0 (RF11)
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mov $177472,r0
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mov $3,-(r0) / rf11.dae.ta[6:5] = 3
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mov $140000,-(r0) / rf11.dar = 140000
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mov $54000,-(r0) / rf11.cma = 54000
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mov $-2000,-(r0) / rf11.wc = -2000 (1K words)
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mov $5,-(r0) / rf11.dcs = read,go
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tstb (r0) / done?
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bge .-2 / no, loop
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jmp *$54000 / jump to bos
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/ 173740 -- load from tap0 (TC11 DECtape)
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mov $177350,r0
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clr -(r0) / tc11.tcba = 0
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mov r0,-(r0) / tc11.tcwc = 177346 (282. bytes)
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mov $3,-(r0) / tc11.tccm = rnum,do
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tstb (r0) / done?
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bge .-2 / no, loop
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tst *$177350 / block 0?
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bne . / no, loop forever
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movb $5,(r0) / tc11.tccm = rdata,do
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tstb (r0) / done?
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bge .-2 / no, loop
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clr pc / jump to location 0
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23
boot/simh.cfg
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23
boot/simh.cfg
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#!tools/pdp11
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set cpu 11/20
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set cpu 32K
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set rk0 enabled
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att rk0 rk0.dsk
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set rf 2p
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set rf enabled
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attach rf rf0.dsk
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set tc enabled
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att tc tape
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set hk disabled
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set rha disabled
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set tm disabled
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set rx disabled
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set rl disabled
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set tq disabled
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set tc enabled
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set rf enabled
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set ke enabled
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set cpu history=1000
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load boot/m792low.load
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d sr 173700
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go 73700
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23
boot/simh_cold.cfg
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23
boot/simh_cold.cfg
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#!tools/pdp11
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set cpu 11/20
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set cpu 32K
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set rk0 enabled
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att rk0 rk0.dsk
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set rf 2p
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set rf enabled
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attach rf rf0.dsk
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set tc enabled
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att tc tape
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set hk disabled
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set rha disabled
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set tm disabled
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set rx disabled
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set rl disabled
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set tq disabled
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set tc enabled
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set rf enabled
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set ke enabled
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set cpu history=1000
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load boot/m792low.load
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d sr 1
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go 73700
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