[Oberon] FPGA - LONG WORD memory access

Chris Burrows chris at cfbsoftware.com
Thu Apr 27 14:16:29 CEST 2017


> -----Original Message-----
> From: Oberon [mailto:oberon-bounces at lists.inf.ethz.ch] On Behalf Of
> Tomas Kral
> Sent: Thursday, 27 April 2017 6:34 PM
> To: Oberon@
> Subject: [Oberon] FPGA - LONG WORD memory access
> 
> Hi,
> 
> Is allowed to address 4byte integers on odd memory address, or does
> it have to be on even boundaries only, aligned on MOD 4?
> 
> I remember from other platforms, namely 68K, words or longs on even
> address only.
> 

Your question is answered in Section 17.1 "The SRAM memory" of the project
Oberon documentation i.e:
 
"The selection of the byte affected is determined by address bits 0 an 1
(which are ignored in the case of word-access)."

Regards,
Chris Burrows
CFB Software
http://www.astrobe.com





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