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- Newsgroups: comp.sys.amiga.hardware
- Path: FreeNet.Carleton.CA!de351
- From: de351@FreeNet.Carleton.CA (K. C. Lee)
- Subject: Re: Why A1200 has no Zorro II/III Bus ??
- Message-ID: <DoA7ME.IBn@freenet.carleton.ca>
- Sender: de351@freenet3.carleton.ca (K. C. Lee)
- Reply-To: de351@FreeNet.Carleton.CA (K. C. Lee)
- Organization: The National Capital FreeNet
- References: <4i939d$bac@hpuniv.univ-lr.fr>
- Date: Thu, 14 Mar 1996 23:51:50 GMT
-
- DAUBIGNE SEBASTIEN (sdaubign@grincheux_7) writes:
- > Could someone explain to me why Commodore didn't put a standard Zorro II/III Bus
- > on the A1200 ? Was it for technical reason or just to make users again feel frustated of
- > not using Graphics Card,...
- >
- > Seb
-
- To put anything other than the native 14MHz bus would cost $$$$. ie Bigger
- PS, mechanical stuff for the slots, electronics etc.
-
- The A1200 would have been perfect for hacking in a graphics card if not
- for the dead-ended expansion. ie you can have 1 perpherial. :(
-
- The bus runs at 14MHz (3 cycles) and is 32-bit wide, so the raw bandwidth
- is about 5X of that of the ZII. It would be quite feasible to hack in a
- VLB graphic card with a few PALs to translate the 020 bus to a 486 CPU that
- the VLB is based on.
-
- I hope that's what they are doing for the graphics card on new 'Walker'
- machine...
-
- K. C. Lee
-
-