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- Path: erinews.ericsson.se!usenet
- From: etxzayl@cate1.ericsson.se (Johan Zeylon IN/SA/BIB)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Any Successful 3.1 ROM Installs?
- Date: 8 Feb 1996 23:58:12 GMT
- Organization: Ericsson Telecom AB
- Distribution: world
- Message-ID: <4fe2mk$jfv@erinews.ericsson.se>
- References: <dalec.04sj@zorro.amitrix.com>
- Reply-To: etxzayl@cate1.ericsson.se
- NNTP-Posting-Host: dill.ericsson.se
-
- In article 04sj@zorro.amitrix.com, dalec@zorro.amitrix.com (Dale Currie) writes:
- >
- >In article <4euh97$kvi@parlor.hiwaay.net> kcox@hiwaay.net (Kevin Cox) writes:
- >> Well if any of you have been keeping up.... and I know you have :) I
- >> finally got my system to working under 3.1. The solution was a leap of
- >> faith and I really don't know how it will affect the system. Anyway
- >> there are 2 jumpers on the 8.9 motherboard labeled J151 and J150. These
- >> are ROM Timing jumpers. They have two settings 25M and 16M. I assume
- >> those are for the 2 speeds that the Amiga 3000 came in.... 16mhz and
- >> 25mhz. Since my 3000 is a 25mhz ALL jumpers dealing with speed are set
- >> to 25M. Well I decided to see what would happen if I set jumpers J151
- >> and J150 to 16M instead. Well, I've been running 3.1 for at least an
- >> hour now with NO problems. I am still holding my breath. My system
- >> usually crashed within the first couple of minutes with 3.1 installed.
- >> Any comments on why this fixed my problem would be appreciated.
- >
- >It would appear that someone cheaped out and used slower access speed
- >EProms to make some of the 3.1 Kickstart roms than they should have.
- >
-
- Actually, you can select 4 different speeds with those.
- Read in the appendixes of your manual and find a setting that has a greater
- Tacc than your ROM:s. You can find out the Tacc time of your ROM:s by looking
- at them. The last part of the type number is the speed, f.ex. -25 means 250ns
- and so on... (And... The type number is under the sticker...)
-
- /Johan
-
-
-