Security & Theft Securing tractor from theft

[gemini5362]

Well, bless my little BCD heart.... there's a fellow who knows how to

1 read a card (from 100 to 179 on a 1401)
2 punch a card (from 200 to 279 on a 1401)

with a little word mark here and word mark there
an early card read here and early card write there
he knows how to get the best thruput anywhere

If some of y'all don't understand the above, it's OK... GS and I are in our own little world

yep you are and it is a reallllllly old world

 

[GilaSlim]

Well, guys, I can't really claim much experience on the 1401. I swiped the paper tape from the vault after the 1620/1401 had been replaced by a S/360 Mod 30 (with hardware 1401 emulator) and a Mod 40. My first assignment as a programmer was to learn 1401 Autocoder, and convert it to COBOL D. About 150 programs still running on the emulator. Took me a while to realize guys had erased the init code at low core and reused it for data. Oh the limits of a 4K machine!

We did stuff with the S/360s that IBM said would not work. We made it work to their surprise. Cabled 2401 tapes, 2311 disks and 2540 Datacells to both machines at the same time. Just had to be sure one didn't access the same physical drive the other machine was using. Crash!

GS

 

[Soundguy]

There are lots of old hardware tricks that manufacturers didn't support.. that machines were capable of.

For kicks back inthe day when vic 20 and C-64's were out.. a friend of mine and myself used to soup them up.. you could crystal them to 2mhz usually.. up from about 1, ( had to add a fan! ) and you could add another SID chip to give them stereo sound.. You could address otherwise protected space in memory not normally used for program emmory via software patches. On the card slot expansion port there was a hobby kit RS-232 pack you could get, AND a parallel port pack.. those 2 items opened up worlds of possibilities. Also.. for the serial drive interface.. we had 2 of the low density 1541 drives, and 2 of the high density ( 1 meg! ) sd1001 drives.. neat little hardware trick for addressing on those. originally a 300bps data set was available for the card slot.. but thru the rs232 pack you could use a ( wow ) 2400bps standard pc modem.

I actually ran a dial in bulleting board system using a setup like that back in the late 80's.. Had a frined who did something similar with a COCO.. trs80slant4 and kludged winchester hard drives For the hobby adventurist.. lots of things were possible.

soundguy

 

[gemini5362]

soundguy I believe I still have my commodore 128 and hard drive in the attic.

 

[patrick_g]

Store bought appliances!!! PETUEY!!!!

Well maybe an IMSAI 8080 (like used by Mathew Broderick in War games") or the little Timex computer.

Preferably a home brew or maybe a self built Heathkit H-8 with H-19 terminal and extra mem cards at 4-16K, or the last dieing gasp was a 64K card LIKE WOW!

Boat anchors.

Wanna scramble your brain? At one time in 1985-6 I had 6 different operating systems in my computer room (spare bedroom.) PC-DOS, MS-DOS, H-DOS, CP/M 80, Xenix (MS port of 16 bit UNIX to MOTO 68K chip), and TRS DOS. At the same time I used DEC's VMS at work on a VAX and IBM VM-CMS in Grad school.

I recall a couple times when I just sort of locked up trying to remember how to do something as simple such as a file deletion... lets see, erase, del, rubout, rm, or what? Once under a CPM-80 emulator program on a VAX 11-785 I was running BASIC 80 and forgot the command "SYSTEM" to get out of BASIC.

Peanut... full size nut... I must be an XXL nut!!!

Pat

 

[Soundguy]

I used to have a timex sinclair.. had a external 16K ram pack.. and I had a hand held mini tape recorder to use as an external storage device. Z80 chip ran it I believe.

soundguy

 

[gemini5362]

OK i have seen people accuse someone of getting off topic and I belive I have even seen them accused about discussions that did not involve tractors but I believe this thread has gone pretty much where no tractor thread has gone before.

 

[firemanpat2910]

I had forgotten all about my old heath kit!!!! I bet I still have the manuals some where.

 

[Danno1]

.

I still got an Apple II in the cellar..................

.

 

[intel]

WOW, guys i thought i was a geak