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From: bjh21 at cus.cam.ac.uk (Ben Harris)
Newsgroups: comp.sys.acorn.hardware
Subject: Re: A540 memory system (anyone got a schematic?)
Date: 21 Aug 2000 23:58:16 GMT
Organization: University of Cambridge, England
Lines: 31
Message-ID: <8nsfmo$en5$1@pegasus.csx.cam.ac.uk>
References: <20000820.221317.90@markettos.org.uk>
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Xref: SnUK comp.sys.acorn.hardware:24792

In article <20000820.221317.90@markettos.org.uk>,
Theo Markettos <news at markettos.org.uk> wrote:
>Also, does anyone have a pinout of the A3000 memory connector?

From my A3000 circuit diagram:

1:  RAMFVcc    21: Rd<5>      41: Rd<20> 
2:  Rd<1>      22: Rd<7>      42: 0V     
3:  Rd<0>      23: Rd<6>      43: Rd<21> 
4:  Bank       24: 0V         44: Ra<9>  
5:  Oe<2>*     25: Rd<8>      45: Rd<23> 
6:  0V         26: Rd<9>      46: Ra<7>  
7:  Wr<2>*     27: Rd<11>     47: Ra<6>  
8:  Ras*       28: Rd<10>     48: RAMFVcc
9:  Ra<0>      29: Rd<12>     49: Ra<2>  
10: Cas<0>*    30: Rd<13>     50: Cas<3>*
11: Ra<1>      31: Rd<15>     51: Rd<25> 
12: RAMFVcc    32: Rd<14>     52: Rd<24> 
13: Ra<8>      33: Cas<2>*    53: Rd<26> 
14: Ra<3>      34: Ra<4>      54: 0V     
15: Rd<27>     36: Rd<16>     55: Rd<22> 
16: Cas<1>*    36: 0V         56: Rd<29> 
17: Rd<3>      37: Rd<17>     57: Rd<30> 
18: 0V         38: Rd<19>     58: Rd<28> 
19: Rd<2>      39: Rd<18>     59: Rd<31> 
20: Rd<4>      40: Ra<5>      60: RAMFVcc

-- 
Ben Harris
Unix Support, University of Cambridge Computing Service.
  If I wanted to speak for the University, I'd be in ucam.comp-serv.announce.