1 Dec
2005
1 Dec
'05
4:02 p.m.
I've never used the 6845 CRTC but over the years I've heard the Hitachi
part is a better version than the older Motorola one. Lacking a datasheet
for Hitachi what is the differnce?
I do have the moto part data sheet.
Allison
1 Dec
1 Dec
4:26 p.m.
Hi Allison,
I've never used the 6845 CRTC but over the years
I've heard the Hitachi
part is a better version than the older Motorola
one. Lacking a datasheet
for Hitachi what is the differnce?
Take a look at:
http://andercheran.aiind.upv.es/~amstrad/docs/crtcnew.html
It appears that the Moto part it a 'Type 2' and the
Hitachi part is a 'Type 0'. The differences between
each type (as well as others) appear to be detailed in
the 'CRTC Differences' section of this web site.
Scott
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4:26 p.m.
On 12/1/2005 at 7:02 PM Allison wrote:
I've never used the 6845 CRTC but over the years
I've heard the Hitachi
part is a better version than the older Motorola one. Lacking a datasheet
for Hitachi what is the differnce?
I do have the moto part data sheet.
Not a whole lot; less than between the Moto and other vendors. Primarily,
some of the write-only registers of the Moto part are read/write on the
Hitachi. Program for the Moto and you'll be safe.
Here's a summary of sorts:
http://andercheran.aiind.upv.es/~amstrad/docs/crtcnew.html
Cheers,
Chuck
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