MPC850 and ATA/IDE

MPC850 and ATA/IDE

[SangTae Ha]

Hi,
I am looking for the solution that I can use ATA/IDE general hard disk like that of PC in my MPC 850 based board.
Our board spec. is as follows.

MPC850 CPU
2M Intel FLASH Memory
2 Ethernet interfaces
16M SDRAM
...

After finishing our embedded linux porting project on MPC850, successfully done, we want to add some features like supporting IDE hard disk. But it's not easy, I feel.

 MPC860 or MPC821 CPU is used and Wind bond 83C553 is used for EIDE port in MBX board. MPC850 also can be used for that purpose?
Could you recommend the reference board  which we can refer to?



Please~~ Help me.

Thanks in advance.


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Re: MPC850 and ATA/IDE

[Dan Malek]

SangTae Ha wrote:
>
> Hi,
> I am looking for the solution that I can use ATA/IDE general hard disk

There are at least three easy and inexpensive ways people add ATA/IDE
to the 8xx processors for embedded systems:

	Connect to PCMCIA interface
	Use a simple CPLD between the processor bus and disk
	Program one of the UPMs to generate timing and then
		externally buffer the signals

>  MPC860 or MPC821 CPU is used and Wind bond 83C553

It is a more difficult solution on the 850 because of the PCI bridge
(fewer
physical address lines).  It is also the most expensive in money, board
space and software.


	-- Dan

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