Spare Time Gizmos
SBC6120 User's Manual
03/09/2003 1:35 PM
Page 43
A. B
UILDING
OS/8
FOR THE
SBC6120
This appendix describes the procedure used to install the SBC6120 ID01 device handler into a
standard OS/8 system and build a bootable disk image. In this example we will start with an
OS/8 V3Q image that was originally built with RX01 and RK05 support. All of the activities
described in this appendix take place on a PC using a PDP-8 emulator such as
WinEight
, and the
result is an ID01 image which can then be downloaded to the SBC6120 (refer to section 4.5).
Although this Appendix does not discuss it, the technique for building a VM01 system is
essentially the same, after making the obvious changes to the device handler names.
1. Edit your copy of the ID01.PA file to ensure that the line which reads
SYS=1
is
not
commented out. The "/" is the comment character in PAL8, so if the line appears as
“
/SYS=1
” then you will need to edit out the slash character.
20
2. Create a copy of the OS8V3Q system disk and use FLX8 to copy the ID01.PA file to it.
Unfortunately there isn't enough room on the original OS8V3Q diskette, so we'll have to delete
some files that we won't be using.
C:\>REM BE SURE TO USE COPY /B HERE!
C:\>COPY /B OS8V3Q.RX1 SBC6120.RX1
1 file(s) copied.
C:\>FLX8
FLX8>MOUNT SBC6120.RX1/VIRTUAL/RX01
%FLX8-I, mounted virtual diskette on file sbc6120.rx1
FLX8>DELETE BASIC.*, BLOAD.SV, BRTS.SV, BCOMP.SV, EABRTS.BN
%FLX8-I, deleted file BASIC.AF
%FLX8-I, deleted file BASIC.FF
%FLX8-I, deleted file BASIC.SF
%FLX8-I, deleted file BASIC.SV
%FLX8-I, deleted file BASIC.UF
%FLX8-I, deleted file BLOAD.SV
%FLX8-I, deleted file BRTS.SV
%FLX8-I, deleted file BCOMP.SV
%FLX8-I, deleted file EABRTS.BN
FLX8>DELETE PT8E.BN, RESEQ.BA, RKLFMT.SV, IDS.SV
%FLX8-I, deleted file PT8E.BN
%FLX8-I, deleted file RESEQ.BA
%FLX8-I, deleted file RKLFMT.SV
%FLX8-I, deleted file IDS.SV
FLX8>WRITE/ASCII ID01.PA
%FLX8-I, wrote ID01.PA to ID01.PA
FLX8>DIR
Directory of SBC6120.RX
BUILD.SV 33 (none) (0070)
ABSLDR.SV 5 1-JUN-93 (0131)
BITMAP.SV 5 (none) (0136)
BOOT.SV 5 (none) (0143)
CCL.SV 18 (none) (0150)
CREF.SV 13 (none) (0172)
DIRECT.SV 7 (none) (0207)
20
If you are very brave, you can wait and do this step under OS/8 using TECO!
