Hi,
> What is the EXTENDED MSX SLOT and what's the difference between 400000-
>and 800000- ?
>
It is different signals /SLTSL0 and /SLTSL1 ( as beside MSX )
connected to different connectors.
To avoid decoder of address on affiliated card
> Also why INTERNAL MSX SLOT is needed?
That which be divorced on maternal charge for instance FLASH ROM 1 or 2 or
4MB
Port �8 does not let to handle such sizes. Extended slots powerfully
slow a functioning (working) a system.
> I think that the first 64KB should be same as MSX standard. So
>we need not to discuss this address space. Right?
Except cells 0000-0004 and extended slot. Cell 0-4 needed for
wrong-instruction trap. I want that, it will be available always.
> Do you mean that 000000-3FFFFF can be used both for linear addressing
>and memory mapping (MSX2 standard)?
Yes
Do You think on other?
> What's XBIOS? New BIOS for the new standard?
>
No It is MSX2 extended BIOS.
>> SLT1 CS1 BDOS
>> SLT2 CS1 DOS2 ( 64KB controll 4104H )
> ^^^^^^^^^^^^^^^^^^^
>I'm sorry? What does it mean?
>
DOS2 take 64 KB ROM. But All four 16KB pages are connected from address 4000
This controls a register 4104. Anyway that DOS2 which beside me.
> How about to use super I/O controller chip for PC?
>
Where to take a specification and chips themselves?
That this gives?
> The problem of KBD is that MSX does not have KBD connector. Also
>MSX controls KBD through PPI. How do you connect the converter to
>PPI?
Yes This is one variant. The Second variant when Z8 itself as PPI, it is
more better.
> Make another different slot for new standard. PC has several types of
>slots (XT ISA, AT ISA, PCI, AGP, ... etc. )
Certainly. But I wants to take a good concept. Beside MSX slot it was.
"Cheap controllers"
I wants its save and add " Upgrade cpu via slot connector"
> In my opinion, MSX should be simple. Should such slots be included?
>To tell the truth, I hate PCI protocol. ;)
I too.
Presently I consider;examin variant amba-bus ( ARM )
It has a separate address and data. ( vs PCI )
But fast the whole will that that its
> Ok. Keep you project and I think we need a lot of discusstions to prevent
>creating diffrent MSX standards.
I this wanted :)
Soon open FTP for my lifelengths, all will be it is available gratis.
Presently goes preliminary part a writing FPGA. I use not expensive from
ALTERA that general prime cost was not more than 100$
Valery
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