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PedroM 68k OS Released
Posted by Michael on 10 December 2003, 23:21 GMT

Patrick Pelissier, author of PreOS and other fine 68k programs, has written the first third-party operating system for the 68k calcs. The open-source PedroM looks like a Unix shell, has task switching and a much smaller size (only 192 KB). It is designed to be compatible with the AMS 1.xx series.

In order to include this OS in our archives, we have added categories for TI-89 Operating Systems, TI-92 Plus Operating Systems, and Voyage 200 Operating Systems.

Morgan has also been fixing up the TI-83 Plus Flash directory into subcategories of games, science, math, et cetera. New submissions should no longer go into the general Flash category but rather one of these new subcategories.

Update (Michael): We are currently being Slashdotted, but holding up just fine because HTTP requests are load-balanced among our Beowulf cluster of 2000 TI-85s. Bring it on!

 


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Re: PedroM 68k OS Released
Halfmoon Account Info
(Web Page)

Speaking of 68k Calculators, I am thinking of puchasing one...but I have a question.
Are all TI-89 calculators sold today Hardware 2.00 (HW 2) ?

     11 December 2003, 23:41 GMT

Re: Re: PedroM 68k OS Released
Christophe Molon-Noblot  Account Info
(Web Page)

yep

     12 December 2003, 00:53 GMT

Re: Re: PedroM 68k OS Released
Drantin  Account Info

If you don't get one second-hand

     12 December 2003, 01:44 GMT


Re: Re: PedroM 68k OS Released
chemoautotroph Account Info
(Web Page)

Buy it at calc.org- they have REALLY good prices, I bought my 89 three years ago from Staples, but I wish the calc.org store had been up then because they are really competitively priced. My friend bought an 89 from them a couple months ago and he was really pleased.

     12 December 2003, 21:21 GMT


Re: Re: Re: PedroM 68k OS Released
ti_is_good_++  Account Info

Buy one at www.electronicprods.com for:
TI-89: $128.75
V200: $168.00

     13 December 2003, 00:04 GMT

Re: Re: Re: Re: PedroM 68k OS Released
BlackThunder  Account Info
(Web Page)

You need to know where to search. One of my friends got a TI-89 for $70 and a TI-83 Plus Silver Edition for $50 of eBay.

     13 December 2003, 00:17 GMT

Re: Re: Re: Re: Re: PedroM 68k OS Released
chemoautotroph Account Info
(Web Page)

Something like a TI calculator I would only buy newv (not on eBay). BTW, TI's suck, buy a Casio ClassPad300... same capabilities as the TI-89, but with a touch screen and a lot of other cool features. I wish I had ~$150

     13 December 2003, 01:09 GMT

Re: Re: Re: Re: Re: Re: PedroM 68k OS Released
W Hibdon  Account Info

Umm, do you realize what you said? "TI's suck". If that is not calling for a flame war, I really don't know what is.

-W-

     13 December 2003, 01:18 GMT


Re: Re: Re: Re: Re: Re: PedroM 68k OS Released
ti_is_good_++  Account Info

Define 'suck'.

About 50000 people are waiting in line to correct you.

     13 December 2003, 02:40 GMT


Re: Re: Re: Re: Re: Re: Re: PedroM 68k OS Released
BullFrog  Account Info
(Web Page)

Make that 50001.

     13 December 2003, 06:06 GMT

Re: Re: Re: Re: Re: PedroM 68k OS Released
Halfmoon Account Info
(Web Page)

Hmm, thanks for your input everybody.

     13 December 2003, 01:18 GMT


Re: Re: Re: Re: Re: PedroM 68k OS Released
ti_is_good_++  Account Info

Well, new. Documented, stable prices.

     13 December 2003, 02:39 GMT

Re: Re: Re: Re: PedroM 68k OS Released
TheGreatOne  Account Info

I bought my TI-89 at Best Buy for $125 on sale..

     14 December 2003, 00:46 GMT


Re: Re: Re: Re: PedroM 68k OS Released
Konrad Meyer  Account Info
(Web Page)

circuit city:
89:$139.99 US no shipping
^ see link
|

     14 December 2003, 20:11 GMT

Porting!
nicklaszlo Account Info
(Web Page)

How long until there is a port for the TI-83+???
Those of us who don't have higher end calcs can't wait!

     12 December 2003, 00:20 GMT

Re: Porting!
nicklaszlo Account Info
(Web Page)

<off topic>What about a bootable VTI flopy disk? Then we could take PedroM on PC everywhere!</off topic>

     12 December 2003, 00:27 GMT


Porting! Moved
nicklaszlo Account Info
(Web Page)

There is now a Porting PedroM post in the Misc. Program Ideas Section.

     14 December 2003, 01:54 GMT


Re: Porting!
Konrad Meyer  Account Info
(Web Page)

its impossible... its a different assembly language.

     12 December 2003, 01:11 GMT


Re: Re: Porting!
Kevin Kofler Account Info
(Web Page)

And besides, has a way to send an unsigned OS update to a TI-83+ been found yet?

     12 December 2003, 03:15 GMT


Re: Re: Re: Porting!
Memwaster  Account Info

I think I found out how to send an ubnsigned OS to the TI-83+.

What you do is you loadthe intel hex file into the initial release of the Flash Debugger (it supports loading unsigned OS's), then you save the state, restore it in the Third release of the aforementioned Flash Debugger (which supports linking to a calc), and transfer the os (using an OS transfer function) to the calc.

Unfortunately, this means that you have to write up TI's linking protocol and stick it on the OS.

If anyone has the (no romcalls) linking protocol for the TI-83+, please email it to me.

I am currently working on an OS for the TI-83+, but have not yet sent it to my calc (There is no routine to remove the OS :)

     12 December 2003, 03:41 GMT

Re: Re: Re: Re: Porting!
Kevin Kofler Account Info
(Web Page)

Sorry, that won't work. This part:
>Unfortunately, this means that you have to write up TI's linking protocol and stick it on the OS.
is the real problem. You can't just overwrite the OS, there are protections against it. The PC-side software used to send it is completely irrelevant.

     12 December 2003, 08:04 GMT


Re: Re: Re: Re: Re: Porting!
Kevin Kofler Account Info
(Web Page)

PS: If you don't understand this, read the TIB Receiver readme. The protection system is practically the same on the TI-83+ as on the TI-89/92+/V200. The difference is that the hacks that work on the TI-89/92+ (and probably V200 soon) do NOT work on the TI-83+ because the CPU is not the same. The Z80 makes it much harder to crash a flash unprotecting routine than the 68k.

     12 December 2003, 08:09 GMT

Re: Re: Re: Re: Re: Re: Porting!
PpHd  Account Info
(Web Page)

Maybe because those who wrote the 83+ OS are better than those who wrote the OS of the 89. :)

     12 December 2003, 08:35 GMT


Re: Re: Re: Re: Re: Re: Porting!
Greg M Account Info
(Web Page)

I think Michael Vincent has written a routine to do just that. Look at the second post by him on the url.(I'm still learning asm - so sorry if I'm wrong)

     12 December 2003, 12:36 GMT


Re: Re: Re: Re: Re: Re: Re: Porting!
Michael Vincent  Account Info
(Web Page)

Well, yes.

There is a way to send an unsigned OS to the 83+.

There is also a way to unlock and then write/erase/read all areas of flash with a RAM program. I'm still debating what to do with that though.

     14 December 2003, 21:07 GMT


Re: Re: Re: Re: Porting!
PpHd  Account Info
(Web Page)

TIB receiver has rewritten the ti link protocol for receiving an OS (That's why it works).

     12 December 2003, 08:36 GMT

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