Re: TI-H: I2C LCD module with MBus
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Re: TI-H: I2C LCD module with MBus
The speed has to do with the hardware (interferance) and how fast the rom
routines are... its hard to explain. I got a big long lecture from mel on
it, and beleive me...some calcs can transfer faster than others. Mel is
working on theories to make the 85 go 15k from the link port, but there is
too much interferance...
>According to ticalc.org, the 82 uses a 6 Mhz Z80 just like the rest of them.
>The same is true for the 83. I'm not clear on how standard linking works on
>any of the calcs, but could the speed diff have something to do with the
>fact that 82 and 83 can link to each other, and 85 and 86 can link to each
>other, but 82 and 83 can't link to 85 and 86?
>
>
>-- Jon Olson
>
>-----Original Message-----
>From: Osma Suominen <ozone@clinet.fi>
>To: ti-hardware@lists.ticalc.org <ti-hardware@lists.ticalc.org>
>Date: Saturday, February 28, 1998 12:54 PM
>Subject: Re: TI-H: I2C LCD module with MBus
>
>
>>
>>Grant Stockly wrote:
>>
>>>
>>>>>What are your thoughts about limiting MBus to Usgard on the 85?
>>>
>>> Good idea. The 85 has the fastest linking speed (yes...) of all 8x calcs
>>> in assembly. For some unknown reason it is almost 1x faster than the 83
>>> (which is pretty fast). Here are my results with the network:
>>
>>Umm, what I meant was that on the 85, MBus would only support Usgard. On
>>the other 8x calcs, other shells could be supported. As there have been
>>very few people around who have said they could port the MBus routines
>>into the 82, 83 and 86, I have considered porting them myself. The problem
>>is that I don't own any of them (and don't want to buy one), so I can only
>>try to make it work. I've seen some emulators on ticalc.org, so they could
>>perhaps be used for testing.
>>
>>But as I said in a previous message, MBus will NOT be limited to Usgard.
>>There are too many people who use other shells. I will still keep a ZShell
>>version of the routines, although it may be a bit limited compared to the
>>Usgard version. MChat doesn't need any of the Usgard features, so I'll
>>probably keep it as a ZShell program.
>>
>>BTW, doesn't the 82 use a 4MHz CPU instead of the 6MHz one on the 85? That
>>would explain the speed difference between those two. I don't know about
>>the 83.
>>
>>-Ozone
>>
>>--
>>*** Osma Suominen *** ozone@clinet.fi *** http://www.clinet.fi/~ozone ***
>>
>>