system to operate as a HASP station in an RJE environment. This implementation is
compatible with Bisync/HASP emulation in the Hercules IBM mainframe emulator and the
DtCyber CDC mainframe emulator.
The initial estimate for instructions per millisec (instpermses) was
much too low for modern CPUs, and was also only updated every 5
seconds. Combined, these were causing the clock to be erratic during
the first 5-15 seconds of system boot.
This was easily noticed by running the MIPS benchmark program right
after a system boot, where instead of delaying 5 seconds, it might
only delay 2 seconds, and then would report a bogus MIPS rating.
Waiting a minute and running it again would give an accurate rating.
Adjusting the instpermsec initial value from 2000 to 40000 and
IPMSTIME time from 5000 ms to 1000 ms (every second vs 5 seconds)
fixes the problem.
37.5 Prime MIPS on Linode VM to 42.5 MIPS. gvp-> was faster on the
PowerPC architecture when gvp was kept in a dedicated register, but
that does not apply to Intel.
Old:
Timing CPU, 20.0 ticks per second...
35.3 Prime MIPS for 16-bit ADD loop
40.0 Prime MIPS for 16-bit MPY loop
42.1 Prime MIPS for 16-bit DIV loop
21.4 Prime MIPS for 32-bit ADD loop
30.8 Prime MIPS for 32-bit MPY loop
28.6 Prime MIPS for 32-bit DIV loop
57.1 Prime MIPS for 16-bit X=0 loop
44.4 Prime MIPS for 32-bit X=0 loop
37.5 average Prime MIPS
New:
Timing CPU, 20.0 ticks per second...
42.9 Prime MIPS for 16-bit ADD loop
53.3 Prime MIPS for 16-bit MPY loop
47.1 Prime MIPS for 16-bit DIV loop
24.0 Prime MIPS for 32-bit ADD loop
38.1 Prime MIPS for 32-bit MPY loop
32.0 Prime MIPS for 32-bit DIV loop
57.1 Prime MIPS for 16-bit X=0 loop
44.4 Prime MIPS for 32-bit X=0 loop
42.4 average Prime MIPS
- decrement hoursleft on each boot to prevent running very short Prime
sessions that don't update the dongle; this allows removing of
dongle_dtime (the last time the dongle was updated)
- only uses 1 dongle location (for hoursleft)
- maintain a checksum on dongle values to detect tampering
- encrypt hoursleft and the dongle checksum
- write random values in all other dongle locations
- validate dongle by asking it to encrypt random values; this requires
that a copy of the dongle key is stored in the executable
- don't fail immediately: just set a status and keep going
- caller sets bad Prime keys and hands us the correct keys; we reset
Prime keys before returning. This makes it harder to bypass
security by not calling it at all.
- Remove long integers so x86_64, where long is 8 bytes, is like i686
compile, where long is 4 bytes.
- Dont' handle xon/xoff on sys console in full duplex
- Add geom hash for DEMO emulator
- Add -mmacosx-version-min=10.4 option for DEMO emulator
- Add 1-line AMLC and 2-node PNC to DEMO emulator
test how magrst behaves. It treats this just like a real tape error,
which is good. If mtwrite is used to re-create a physical tape from a
.tap file, it cannot re-create tape errors, so writes a 4-byte zero
record instead. Prime magrst will still see this as an error record
since it isn't long enough to be a real magsav record.
add DNS lookup on every license server connect to handle dynamic IP
made keyboard chars ^O, ^Y, and ^V work on system console
added printf in fatal() if any messages were logged to error.log
supports ^b in Primos II to reboot from tape w/Primos II in memory
to allow running make rev 19 from Primos II, but it's still broken
fixed cylinder limits for some disk models (couldn't format some drive types)
fixed devdisk problem: a error on one unit could cause bogus errors on another
IMPORTANT: fixed rare bug where emulator would hang in sleep (IMPS=0)
added licensing dongle support
boot option supports filename, sense and data switches:
-boot filename sswitch dswitch (for D. Boone)
-ds option (like VCP) as alternate way to set data switches (for D. Boone)
removed -v and -vv: they were old and didn't do anything
tries to read ring0.map and ring3.map if no -map option used
fixed bug with new connect for multiple AMLC controllers
default build is now for 32 amlc lines
fixed disk geometry for CMD; added geometry for Model 4935 (1.1G NEC)
fixed tape boot for variable record sizes (for D. Boone), but rev 19 loops
added EMULATOR_VERSION #define and version printf()
changed tape drive filenames from dev14u0-4 to mt0-4
changed disk drive filenames from dev26u0 to disk26u0
added license manager tracing
changed to automatically redirect stderr to error.log on startup
changed to create mtx tape drive files if they don't exist
tested write-protected tape drive files
changed invalid seek from a fatal error (emulator halt) to a disk error
disable Nagle algorithm for telnet connections (OSX buggy delay)
error setting terminfo flags for USB serial devices is no longer fatal
changed "pio to unimplemented device" from error to trace
changes for hobby version (no amlc, one disk drive)
new files geom.h, geomhash.h, geomhash.c for hobby version
added checksum to disk geometry tables to thwart hacking hobby version
added head offset check to disk driver for hobby version
added -boot help to display help with booting
added initial support for Matrixlock dongle
emulator handles xon/xoff on console to avoid blocking
supports read-only tape files (Unix read-only mode)
changed clock catch-up code (slower) so rev 20 doesn't crash after suspend
changed disk driver to controller 0-7 instead of device 0-64
demand-based variable interrupt rate for amlc controllers
fixed devdisk error reading zero bytes past disk eof (for D. Boone)
devdisk sets read check status bit on Unix read error
added INA '1114 for cpboot (for D. Boone)
changed SETCC_16/32, tcr, tch for speed, checked with Shark
support for real serial ports
added "amlc" config file to tie specific amlc lines to serial ports
changed amlc context to controller 0-7 rather than device 0-64
use lword bit 7 to enable hardware flow control: 2413 -> 3413
poll amlc faster if dmq buffer full (output), but don't do this for
input because user input buffer might overflow
-- this was causing the LISTENER_ORDER$ signals after DIAG
-- also was causing HELP to fail sporadically (HELP MTRESUME)
removed TB_xxx flags (identical to T_xxx)
added some eap hints
changed to pop the concealed stack earlier
changed LDLR/LDAR to load result from RP if ea is 7
changed STLR/STAR to store result in RP if ea is 7
added new trace flags for GET/PUT (unimplemented)
reworked ring/register fix so that Primos nevers sees RP faulted
but we don't have to do extra tests in the fetch loop
changed EAxxx routines to use RP segno when EA = register
added FP exception fault to ieeepr8 and all FP routines
added round flag to ieeepr8 (though not sure it's rounding correctly)
used gcov info to reorder some stuff in ea16s, ea32s, ea32r64r
changed warn() and fatal() to use get16t; prevpc might be a register
IMPORTANT NOTE: to compile with -O0, also use -DNOREG (gcc bug)
changed ARGT to add ring bits to LB & SB in brsave[]
major TRACE update, to debug Information tsrc$$ problem
changed MAXMB default for non-OSX platforms (PS3) to 32MB
changed B(I,D)(X,Y) instructions to increment/decrement inside if;
(avoids reloading values to test them) and removed B(X,Y)NE macros
changed default cpuid to 15 so real time clock is always set
use ppa instead of ppn to avoid << 10 on every memory reference
changed newkeys() so illegal keys give illegal instruction vs fatal()
removed hack to patch Primos for rev 23 SSSN check
added code to SSSN to skip the check loop immediately following
removed #ifdef FAST from a few places, just use the faster code
added code to LDA trace to also display as two octal bytes
added get32m & put32m: these always map
changed get32 and put32 to be inlined
changed mem[] references to MEM[] to allow experiments
tried using register for MEM pointer - not so great
tried using register for instcount - screwed up (very sluggish)
added INCRP macro - now does 32-bit increments of RP for speed
added ADDRP macro to return RP incremented by n (CGT)
changed globals to static (didn't help speed much - thought it might)
moved around some functions
changed shift instructions to create bitmask at runtime (faster)
manually inlined mathexception (but used inline keyword in later revs)
