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computers / comp.sys.ibm.ps2.hardware / Oh. Spock w/cache and 256K by 18 bits [take me to Bermuda !]

SubjectAuthor
* Oh. Spock w/cache and 256K by 18 bits [take me to Bermuda !]Louis Ohland
`* Re: Oh. Spock w/cache and 256K by 18 bits [take me to Bermuda !]IBMMuseum
 `- Re: Oh. Spock w/cache and 256K by 18 bits [take me to Bermuda !]Louis Ohland

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Oh. Spock w/cache and 256K by 18 bits [take me to Bermuda !]

<trdpqc$2i98$1@842ffb22-07e1-11e5-a459-00266cf00584.csiph.com>

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From: ohl...@charter.net (Louis Ohland)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Oh. Spock w/cache and 256K by 18 bits [take me to Bermuda !]
Date: Wed, 1 Feb 2023 07:35:15 -0600
Organization: csiph.com Internet News Service
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 by: Louis Ohland - Wed, 1 Feb 2023 13:35 UTC

https://www.ardent-tool.com/docs/pdf/ibm_scsiwc_trm.pdf

page 9

Disk Cache
The disk cache keeps frequently-used SCSI device data available for
immediate transfer to the system. The disk cache also holds data
until it can be transferred to the system by the system interface/bus
master DMA controller. The disk cache is organized as 256K by 18
bits, including two parity bits, for a total of 512K bytes (K = 1024).

https://www.ardent-tool.com/76_77/Bermuda.html#Bermuda_Planar

U23 HM514280ALJ8 256Kx18 DRAM

Sooo... looks to me that the Bermuda fully resembles Spock with 512K
cache...

Re: Oh. Spock w/cache and 256K by 18 bits [take me to Bermuda !]

<257e6a5c-396c-4a23-a3ad-63ccd493480cn@googlegroups.com>

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Subject: Re: Oh. Spock w/cache and 256K by 18 bits [take me to Bermuda !]
From: ibmmus...@gmail.com (IBMMuseum)
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 by: IBMMuseum - Wed, 1 Feb 2023 17:56 UTC

> Sooo... looks to me that the Bermuda fully resembles Spock with 512K
cache...

....and the Gearbox 800 DASD card, along with the 9585 'X' planar...

Re: Oh. Spock w/cache and 256K by 18 bits [take me to Bermuda !]

<trenur$6np$1@842ffb22-07e1-11e5-a459-00266cf00584.csiph.com>

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From: ohl...@charter.net (Louis Ohland)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: Oh. Spock w/cache and 256K by 18 bits [take me to Bermuda !]
Date: Wed, 1 Feb 2023 16:09:38 -0600
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In-Reply-To: <257e6a5c-396c-4a23-a3ad-63ccd493480cn@googlegroups.com>
 by: Louis Ohland - Wed, 1 Feb 2023 22:09 UTC

Just a relief after suggesting a Bermuda as a good platform.

IBMMuseum wrote:
>> Sooo... looks to me that the Bermuda fully resembles Spock with 512K
> cache...
>
> ...and the Gearbox 800 DASD card, along with the 9585 'X' planar...
>

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