| Author |
Message |
J-vibe
Guest
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 Posted:
Sat Mar 12, 2005 3:40 pm Post subject:
EPROMs 27256, 2764 |
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Hi,
Does anyone know if I could interchange/combine MBM27256-30 and MBM2764-20 ?
Also, can EPROMS of different speeds be used on the same circut? If so, how
can I calc the limits such as mixing in 30s, 20s, etc...
Thanks
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Ross Herbert
Guest
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| Posted:
Sat Mar 12, 2005 5:03 pm Post subject:
Re: EPROMs 27256, 2764 |
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On Sat, 12 Mar 2005 09:40:12 GMT, "J-vibe" <nospam@nospam.com> wrote:
| Quote: | Hi,
Does anyone know if I could interchange/combine MBM27256-30 and MBM2764-20 ?
Also, can EPROMS of different speeds be used on the same circut? If so, how
can I calc the limits such as mixing in 30s, 20s, etc...
Thanks
|
Generally speaking, provided that your CPU bus speed will function
correctly with the lower speed devices - in this case 30nS - then it
will quite happily allow mixing with higher speed chips such as 20nS
devices. |
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J-vibe
Guest
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| Posted:
Sat Mar 12, 2005 9:26 pm Post subject:
Re: EPROMs 27256, 2764 |
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| Quote: | Generally speaking, provided that your CPU bus speed will function
correctly with the lower speed devices - in this case 30nS - then it
will quite happily allow mixing with higher speed chips such as 20nS
devices.
|
Thank you.
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Watson A.Name - \"Watt Su
Guest
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| Posted:
Sat Mar 12, 2005 9:32 pm Post subject:
Re: EPROMs 27256, 2764 |
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"Ross Herbert" <rherber1@bigpond.net.au> wrote in message
news:jvi531t12nvt5ivt5p9gi3kkicd21195or@4ax.com...
| Quote: | On Sat, 12 Mar 2005 09:40:12 GMT, "J-vibe" <nospam@nospam.com> wrote:
Hi,
Does anyone know if I could interchange/combine MBM27256-30 and
MBM2764-20 ?
Also, can EPROMS of different speeds be used on the same circut? If
so, how
can I calc the limits such as mixing in 30s, 20s, etc...
Thanks
Generally speaking, provided that your CPU bus speed will function
correctly with the lower speed devices - in this case 30nS - then it
will quite happily allow mixing with higher speed chips such as 20nS
devices.
|
IIRC, a 2764-30 is not 30, but 300 nS. |
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Ross Herbert
Guest
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| Posted:
Sun Mar 13, 2005 2:24 pm Post subject:
Re: EPROMs 27256, 2764 |
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On Sat, 12 Mar 2005 07:32:42 -0800, "Watson A.Name - \"Watt Sun, the
Dark Remover\"" <NOSPAM@dslextreme.com> wrote:
| Quote: |
"Ross Herbert" <rherber1@bigpond.net.au> wrote in message
news:jvi531t12nvt5ivt5p9gi3kkicd21195or@4ax.com...
On Sat, 12 Mar 2005 09:40:12 GMT, "J-vibe" <nospam@nospam.com> wrote:
Hi,
Does anyone know if I could interchange/combine MBM27256-30 and
MBM2764-20 ?
Also, can EPROMS of different speeds be used on the same circut? If
so, how
can I calc the limits such as mixing in 30s, 20s, etc...
Thanks
Generally speaking, provided that your CPU bus speed will function
correctly with the lower speed devices - in this case 30nS - then it
will quite happily allow mixing with higher speed chips such as 20nS
devices.
IIRC, a 2764-30 is not 30, but 300 nS.
|
Correct. I am used to dealing with modern memory with speeds in the
10's of nanoseconds and I overlooked the fact that the 30 meant 300 on
the 2764. The principle still holds though. :-)
Of course, the OP will need to ensure other specs regarding each
device type (which are being mixed) are also compatible. |
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