1) Minor cleanup of some instruction execution to better match
flowcharts.
2) Changes to allow proper reboot if OS crashed.
3) Changes to terminal muliplexer to allow for simH expect/send
to work.
4) Some corrections to translation table.
5) Support for new sim_card interface. This includes support for
stacking of multiple decks on the input stream.
Also changed how interrupts are generated. When a line changes state
and interrupt should be generated. Once this is read no further
notification should be posted. If no characters are written in a
record the DTC should transition to IDLE state.
These changes facilitate more robust parameter type checking and helps
to identify unexpected coding errors.
Most simulators can now also be compiled with a C++ compiler without
warnings.
Additionally, these changes have also been configured to facilitate easier
backporting of simulator and device simulation modules to run under the
simh v3.9+ SCP framework.
The B5500 simulator supports the following peripherals.
Two CPUs with between 4K and 32K of memory. The second CPU can be
enabled with "set cpu1 enable". "set cpu1 disable" disables the
second CPU.
Up to 4 floating IO channels. Individual channels can be enabled with
"set io# enable", or "set io# disable".
There are two card readers. The second reader is disabled by default.
There is one Card Punch.
The Card reader and Card Punch support the following options:
set cr format=
auto - will automatically determine the format based on the
text it recieves.
text Text based cards. Tabs are converted to the correct
number of spaces. A record of
~raw octal will enter a binary card.
~eor will enter a 7/8/9 punch in column 1.
~eof will enter a 6/7/9 punch in column 1.
~eoi will enter a 6/7/8/9 punch in column 1.
~~ will enter a ~ as the first character.
bin Binary Card format:
Each record 160 characters.
First characters 6789----
Second character 21012345
111
Top 4 bits of second character are 0.
It is unlikely that any other format could
look like this.
bcd BCD Format:
Each record variable length (80 chars or less).
Record mark has bit 7 set.
Bit 6 is even parity.
Bits 5-0 are character.
cbn CBN Format:
Each record 160 charaters.
First char has bit 7 set. Rest set to 0.
Bit 6 is odd parity.
Bit 5-0 of first character are top 6 bits
of card.
Bit 5-0 of second character are lower 6 bits
of card.
For punch format of auto if the card can't be converted to text it is
output as a raw record.
There are two line printers, the second one is disabled by default. The LP
supports the option "set lp# linesperpage=#" which determines when the
printer will force out a page break.
There are up to 16 mag tape drives, the format is controlled by the standard
simh format control for tapes. These are 6 bit tapes, 1 character per record
with parity. Units 8-16 are disabled by default.
There are up to two drum units DR0 and DR1. These can either be attached
to a file or set to AUXMEM. Setting to AUXMEM causes them to exist only
during the given simh run. Setting back to DRUM will clear whatever was
stored on the drum. To enable use of DRUM on XV the following options should
be turned on "DRA,DRB,CODEOLAY,DATAOLAY". MCP will then use the drum as a
overlay device instead of the disk system.
Disks can be attached to the various ESU's, ESU0-9 are on DKA by default,
ESU10-19 are on DKB. If "set dk1 dfx" is set, then ESU10-19 are not used and
the disks are shared by both DKA and DKB. To use more then 10 ESU's in a non
shared mode, a new version of MCP must be created. MCP must be compiled with
DFX option set to false. For MCP XV DKBNODFX must also be set to true. ESU units
can be set to MODI or MODIB. MODIB will double the size of the drive.
The DTC can be attached to a telnet port with "attach dtc #" to enable dialup
access to the sim.
The loader card for the card reader is:
~raw0104441100204231524012004000004444550211002041317700000000000024045303040243
00050000006501004131011041310055005500000062005042310000006600304231000000720010
42310000007675610165001002310010413100040107202500440106202533554061256520252265
20251765202514655355536117650000004401062025155522610165225572610465044101160500
4131
This card should be all in one line.
