Re: TI-H: TI-89/92 ROMs NOT compatible

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: TI-89/92 ROMs NOT compatible
From: gussie@alaska.net (Grant Stockly)
Date: Fri, 20 Mar 1998 15:14:57 -0700
Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: ti-hardware@lists.ticalc.org


Probably on the 89 or 92with + module...we'd have to modify the calcs rom
and use a special bus address line.  That would mean we would have to find
an empty space in rom...  Maybe a pointer in the flash rom (in 89 or +
module) that looks for the driver in RAM.  If it finds it then it can
access the HD.  we don't have enough room in rom for a HD driver...  we
need at least 12k

Grant

>http://www.eklektix.com/gfc/gsale/ He only has one, though.  How hard would
>it be to change the program to suit a different sized hard drive?  Also,
>where can you get yours?  Go for 40MB, 2 dollars won't break anyone, even if
>noone will go over 20MB in the first place, still, 8 years ago I though I
>would never outgrow my 40MB drive!!!  And if we get more space, the programs
>can be made bigger, better, and with more cool pics.  Imagine a 100MB calc
>game :-)  Anyways, think about it.
>
>
>>
>>Where?  I can get 20MB for $2 and 40MB for $4...
>>
>>>I know where to get a 100MB SCSI drive for $20 or less, would that still
>>>work?  I don't know where to buy a 20MB!!!
>>>
>>>
>>>>
>>>>For now lets do a 20MB HD...then we can get a 21.5GB Quantum to work  :)
>>>>
>>>>>Yeah, CD-ROM support!!  Get every single Fargo program on one CD-R and
>pop
>>>>>it in!  Well, a small hard drive would be more practical. . .
>>>>>
>>>>>>Does anyone want SCSI support on the TI92/89?  I was diging around my
>>>>>>"treasure" room and found my "hot wired" 512k.  Apple sold 200 of those
>>>to
>>>>>>special distributiors to demonstrate the 'puter.  They thought that
>>>>>>customers would buy a computer if it had 4MB/SCSI/800k instead of
>>>>>>512k/400k...
>>>>>>
>>>>>>
>>>>>>The neat thing is that steve jobs actually signed the motherboard!  not
>>>>>>only the Case!  There are about 20 wires running from the CPU to a chip
>>>>>>which connects to a ribon cable and then goes out the battery port
>thing.
>>>>>>It uses the standard a SCSI controller so...SCSI on the 92!  I think
>its
>>>a
>>>>>>NCR.
>>>>>>
>>>>>>>> new OS onto the chip.  With 1 meg of space on it, why not put a
>>>modified
>>>>>>>> MacOS?  When I say modified, I mean, moving the command keys around,
>>>and
>>>>>>>> pointing the ADB port out the link port (we'd have to supply power
>>>>>>>> seperatly.)
>>>>>>>
>>>>>>>OS is Easily done, but I don't know about ADB.
>>>>>>
>>>>>>Just use the arrow keys...
>>>>>>
>>>>>>
>>>>>>
>>>>
>>>>
>>>>
>>
>>
>>