For an 8-bit system, one 8255 and one hex inverter and you have
a full 16-bit IDE interface.
ben franchuk wrote:
> Michael Davidson wrote:
>
>> Note that, while a "real" IDE interface requires a 16 bit
>> data path (or, in the case of an 8 bit system, additional
>> latches to handle the upper 8 bits of data) it's only the
>> actual data register that is 16 bits wide, so you *can*
>> greatly simplify the interface if you don't mind wasting
>> half the capacity of your storage device (ie you only use
>> the low byte in the 16 bit data transfers). The downside
>> of this, apart from wasting 50% of the storage, is that
>> the data is stored in every other byte on the media making
>> interchange with other systems a problem.
>>
>>
> http://www.burched.biz/products.html
> What looks to be better is a flash card interface
> like here.
> Ben.
Received on Mon Feb 03 2003 - 14:13:00 GMT