28 Oct
2000
28 Oct
'00
3:46 a.m.
Dear Sirs
We have many cytospins which are centrifuges esed in cytology departments
and the peripherals chips used are INS8154N, we are not able to find any of
them from any source. Can you suggest any or some equivalents.
With Regards
Abrar
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28 Oct
28 Oct
5:47 a.m.
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6:33 a.m.
This is a National Semiconductor I/O-chip with internal RAM.
I don't think you will find easy replacements because this was
a very NS-only chip with no second sourcing.
It was used in Science of Cambrigde's (Clive Sinclair) MK 14
Sipke de Wal
----- Original Message -----
From: abrar wadera <abrarwadera(a)hotmail.com>
To: <classiccmp(a)classiccmp.org>
Cc: <abrar.wadera(a)del2.siemens.co.in>
Sent: Saturday, October 28, 2000 5:46 PM
Subject: INS8154 used in Cytospin
Dear Sirs
We have many cytospins which are centrifuges esed in cytology departments
and the peripherals chips used are INS8154N, we are not able to find any of
them from any source. Can you suggest any or some equivalents.
With Regards
Abrar
_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
Share information about yourself, create your own public profile at
http://profiles.msn.com.
6:56 a.m.
I'll look later for the INS8154, but the Intel 8155 and 8156 were both RAMs
with 16 bits of I/O controllable on a bitwise basis like the bits in a 6821
. . . Could one of those work?
Dick
----- Original Message -----
From: Sipke de Wal <sipke(a)wxs.nl>
To: <classiccmp(a)classiccmp.org>
Sent: Saturday, October 28, 2000 12:33 PM
Subject: Re: INS8154 used in Cytospin
This is a National Semiconductor I/O-chip with
internal RAM.
I don't think you will find easy replacements because this was
a very NS-only chip with no second sourcing.
It was used in Science of Cambrigde's (Clive Sinclair) MK 14
Sipke de Wal
----- Original Message -----
From: abrar wadera <abrarwadera(a)hotmail.com>
To: <classiccmp(a)classiccmp.org>
Cc: <abrar.wadera(a)del2.siemens.co.in>
Sent: Saturday, October 28, 2000 5:46 PM
Subject: INS8154 used in Cytospin
> Dear Sirs
> We have many cytospins which are centrifuges esed in cytology
departments
> and the peripherals chips used are INS8154N, we
are not able to find any
of
> them from any source. Can you suggest any or some
equivalents.
>
> With Regards
>
> Abrar
>
_________________________________________________________________________
> Get Your Private, Free E-mail from MSN Hotmail at
http://www.hotmail.com.
Share information about yourself, create your own public profile at
http://profiles.msn.com.
8:02 a.m.
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8:43 a.m.
Well, I checked my 1980 National Semi MCS-48 data book and found not only
that there was no 8154, but that the 8155 and 8156 were not listed (yet)
either. They did make them, however, because I have them (INS8155,56) among
my parts.
There's apparently a gap in my literature, but I have no later embedded or
microcontroller books that list the MCS-48 product line. I doubt the part
would appear together with products coming from device families intended to
replace the MCS-48. It must have lived iwithin a fairly narrow window.
NEC and a few others made the 8155 and '56, so they might have made a
version of the 8154 as well.
Dick
----- Original Message -----
From: Tony Duell <ard(a)p850ug1.demon.co.uk>
To: <classiccmp(a)classiccmp.org>
Sent: Saturday, October 28, 2000 2:02 PM
Subject: Re: INS8154 used in Cytospin
>
> I'll look later for the INS8154, but the Intel 8155 and 8156 were both
RAMs
> with 16 bits of I/O controllable on a bitwise
basis like the bits in a
6821
. . . Could
one of those work?
Well, certainly not directly (i.e. it's not plug-n-play). The 8154 had a
few features that I've seen on no other chip (like the addresses to
set/clear individual bits).
The 8154 also (IIRC) has separate address and data lines on the
microprocessor bus side. Doesn't the 8155 have a multiplexed bus to link
to an 8085 (or similar)?
You could probably redesign the instrument to use an 8155 (or an 8156,
AFAIK the only difference between these is the polarity of the chip
select input), but it would be a redesign. And maybe not a simple one.
-tony
8:05 a.m.
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12:32 p.m.
I Agree with you that MK14 should be preserved! I only
mentioned it in the RE:INS8154 so the folks on the list
cloud get an idea of where this chip was used in.
I've checked the MK14 diagram and it doesn't say anything
about the 8154 being optional but the MK14 has other RAM-chips
and the 8154 I/O ports are all going directly to the expansion
connector. So I guess it was optional.
I personally worked with the Elektor SC/MP stuff .allthoug I've
owned a MK14 for a while. I didt'n like it very much because
the keyboard was lousy and keying in a proggy was hell!
By the way: I'm allmost ready with the Elekor SC/MP emulator
when finaly done I will may it aviable.
Sipke de Wal
----- Original Message -----
From: Tony Duell <ard(a)p850ug1.demon.co.uk>
To: <classiccmp(a)classiccmp.org>
Sent: Saturday, October 28, 2000 9:05 PM
Subject: Re: INS8154 used in Cytospin
snip
It was used in Science of Cambrigde's (Clive Sinclair) MK 14
I believe it was an option on the MK14, so even if you find an MK14
it's not certain the INS8154 will be there. Anyway, MK14s are rare enough
that they shouldn't be stripped down.
snip
29 Oct
29 Oct
1:34 a.m.
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8820
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8 comments
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participants (4)
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abrarwadera＠hotmail.com -
ard＠p850ug1.demon.co.uk -
richard＠idcomm.com -
sipke＠wxs.nl