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rl02 3

1ajs

Experienced Member
Joined
May 27, 2005
Messages
452
Location
Winnipeg, Manitoba, Canada
finaly sitting down toying around

spent a day learning about odt lot more to learn there after pulling hair

now finding i am getting a fault on the rl02 dunno will take some investigating

someone on the sebhc mailing list pointed me to this as my machean is a heathkit h11
and i don't have the proper loader on tape

RL01/02 Disk

Loc. Cont. Instruction Comment
=======================================
001000 012700 mov #rlcs,r0 controller address
001002 174400
001004 012760 mov #cmd,4(r0) seek command data
001006 000013
001010 000004
001012 012710 mov #cmd,(r0) get status
001014 000004
001016 105710 tstb (r0) wait ready
001020 100376 bpl .-2
001022 005060 clr 2(r0) zero bus address
001024 000002
001026 005060 clr 4(r0) zero disk address
001030 000004
001032 012760 mov #-256,6(r0) set the byte count
001034 177400
001036 000006
001040 012710 mov #cmd,(r0) read block
001042 000014
001044 105710 tstb (r0) wait ready
001046 100376 bpl .-2
001050 000000 halt (or 5007 to auto start)

source: http://www.psych.usyd.edu.au/pdp-11/bootstraps.html


then over on the classiccmp irc channel got into a discussion as my rl02 is reading a fault constantly

and told me to do this

but can't get this to do anything
http://www.cosam.org/computers/dec/pdp11-23/20080404.html
Deposit a 3 into the DAR at 774404 (13 if you want to reset the drive)
Deposit a 4 into the CSR at 774400 (404, 1004 or 1404 for units 1, 2 or 3)
Wait for the operation to complete
Read off the contents of the MPR at 774406

774404/ 3 enter
774400/ 4 enter

waits a few
then

774406/ enter

using windows hyper terminal

witch gives me 00

but turns out thats not the 16bit version witch they then sent me but i was heading out the door at that time to do stuff so i havent toyed with this version yet

174404/ 3 enter
174000/ 4 enter
174406/ enter

h11rl02.jpg



youtube video of it all just idling
http://youtu.be/sPZjfz_xwwY
 
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