[comp.sys.amiga.hardware] questions about REV 4.5, EHC and workbench 2.0

AP_vRooijen@pttrnl.nl (10/29/90)

Hello World,

I've got a couple of questions about the enhanced chip set for the amiga 2000.

When I open my Amiga I see printed on the motherboard  
"Amiga B2000 A/W 312723 REV 4.4" and on a sticker "REV 4.5". Now are my
questions:

- What are the differences between REV 4.4 and REV 4.5

- Is it possible to use the EHC and workbench 2.0 with a REV 4.5 motherboard

- And is it likely that the EHC and workbench 2.0 are available in November
  because I am going to the states in November.

 -- 
                        Arthur van Rooijen
 
 PTT Research Neher Laboratories,	 Phone  : +31 70 3325092
 2260 AK Leidschendam,			 Telefax: +31 70 3326477
 P.O. box 421,			         Telex  : 31236 prnl nl
 The Netherlands.

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arian@dnlunx.pttrnl.nl (Koster A.) (11/05/90)

(I'm posting this or a friend please reply to ap_vrooijen@pttrnl.nl)

Hello World,

I've got a couple of questions about the enhanced chip set (EHC) for the amiga
2000.

When I open my Amiga I see printed on the motherboard  
"Amiga B2000 A/W 312723 REV 4.4" and on a sticker "REV 4.5". Now are my
questions:

- What are the differences between REV 4.4 and REV 4.5

- Is it possible to use the EHC and workbench 2.0 with a REV 4.5 motherboard

- And is it likely that the EHC and workbench 2.0 are available in November
  because I am going to visit the states (Florida) in November.

--
                        Arthur van Rooijen
 
 PTT Research Neher Laboratories,    Phone  : +31 70 3325092
 2260 AK Leidschendam,               Telefax: +31 70 3326477
 P.O. box 421,                       Telex  : 31236 prnl nl
 The Netherlands.                         
                                          +----------------------------------
 Domain        : ap_vrooijen@pttrnl.nl    |  As the people here grow colder 
 EARN/BITnet   : ROOIJEN@HLSDNL5.BITNET   |  I turn to my computer            
 PSS (DATAnet1): +204 1170358::ROOIJEN    |  And spend my evenings with it  
 SURFNET-2     : +204 129110052::ROOIJEN  |  Like a friend       "Kate Bush"

daveh@cbmvax.commodore.com (Dave Haynie) (11/08/90)

In article <2414@dnlunx.pttrnl.nl> arian@dnlunx.pttrnl.nl (Koster A.) writes:
>(I'm posting this or a friend please reply to ap_vrooijen@pttrnl.nl)

>- What are the differences between REV 4.4 and REV 4.5 [of the 2000]

Rev 4.5 has had the value of the expansion bus line BAS* (buffered address
strobe) increased from 10K to about 1K.

>- Is it possible to use the EHC and workbench 2.0 with a REV 4.5 motherboard

ECS chips work and the 512K ROM work on any rev of the A2000-b.  No word on
when they'll be for sale yet.

>                        Arthur van Rooijen
-- 
Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests"
   {uunet|pyramid|rutgers}!cbmvax!daveh      PLINK: hazy     BIX: hazy
	Standing on the shoulders of giants leaves me cold	-REM