Acer 500+ ( MPF-PC/500 +E2 ) Gona try fire it up :) \ VOGONS

Acer 500+ ( MPF-PC/500 +E2 ) Gona try fire it up :)

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First post, by _Roffe_

Posted on 2022-01-13, 22:50

_Roffe_ Offline

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Hello
I have had a Acer 500+ (MPF-PC/500 +E2) in my basement for couple of years now and i finally started looking into starting it up and see if it works 😀
Iam typing this as iam looking for manuals/spec for this machine, and i found some material that is close to my setup.
https://forum.system-cfg.com/viewtopic.php?t=11979 (MPF-PC/500 +IIS2)

Info:
ISA Board:
CPU/500+ (N) 2L
PB87035-2
CPU: Sony-CXQ70108P-8 https://www.cpu-world.com/CPUs/V20/Sony-CXQ70108P-8.html

ISA Board:
Bios battery and stuff 😀

ISA MFM

Dose any one know anything about this kind of systems? 😀

Here is some pictures:

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Last edited by _Roffe_ on 2022-01-13, 23:12. Edited 1 time in total.

Reply 1 of 13, by _Roffe_

Posted on 2022-01-13, 22:58

_Roffe_ Offline

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ISA Board:
CPU/500+ (N) 2L
PB87035-2

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Reply 2 of 13, by _Roffe_

Posted on 2022-01-13, 23:02

_Roffe_ Offline

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ISA Board:
Bios battery and stuff 😀

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Reply 3 of 13, by _Roffe_

Posted on 2022-01-13, 23:05

_Roffe_ Offline

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ISA MFM

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Reply 4 of 13, by snufkin

Posted on 2022-01-13, 23:22

snufkin Offline

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Maybe a Popular 500: https://classictech.files.wordpress.com/2010/ … cer-4-29-87.pdf (page 6 and 7, also page 39)

Reply 5 of 13, by _Roffe_

Posted on 2022-01-13, 23:34

_Roffe_ Offline

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snufkin
Yes i found that one to.
Almost the same, a bit slower processor 4.77Mhz
The Acer model i have is 8mhz 😀
Iam gona get Civ to work on it! Maybe even Colonization? 😀

Reply 6 of 13, by _Roffe_

Posted on 2022-01-14, 01:39

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I have found a graphics chip:
UM6845
Not sure if that is MDA maybe?

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Reply 7 of 13, by _Roffe_

Posted on 2022-01-14, 03:07

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Found this on the inside of the lid, dont know why i didn't check that the first thing 😀

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Reply 8 of 13, by Horun

Posted on 2022-01-14, 06:12

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_Roffe_ wrote on 2022-01-14, 03:07:

Found this on the inside of the lid, dont know why i didn't check that the first thing 😀
IMG_0076.JPG

That is great ! Over the decades only found a few old machines that had a similar jumper label attached inside the case.
That Sony cpu is a faster version of the NEC V20, very cool.

added: from what little info I found the 500 Plus used the Sony V20 cpu where the 500 standard used the Intel 8088-2, also a 8mhz cpu but lacked the the added new instructions from the 80186/80188 cpu's...
Will look for some docu's but doubt will find anything...

Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor. Stuff: https://archive.org/details/@horun

Reply 9 of 13, by _Roffe_

Posted on 2022-01-14, 08:23

_Roffe_ Offline

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Horun wrote on 2022-01-14, 06:12:
That is great ! Over the decades only found a few old machines that had a similar jumper label attached inside the case. That S […]
Show full quote

_Roffe_ wrote on 2022-01-14, 03:07:

Found this on the inside of the lid, dont know why i didn't check that the first thing 😀
IMG_0076.JPG

That is great ! Over the decades only found a few old machines that had a similar jumper label attached inside the case.
That Sony cpu is a faster version of the NEC V20, very cool.

added: from what little info I found the 500 Plus used the Sony V20 cpu where the 500 standard used the Intel 8088-2, also a 8mhz cpu but lacked the the added new instructions from the 80186/80188 cpu's...
Will look for some docu's but doubt will find anything...

This hole machine is cool in my eyes 😀
I always liked Acer laptops and this is by far the oldest Acer i seen!
Just need a MCE2VGA to try it out!
And then there is the keyboard that iam not sure if it is the standard AT keyboard? maybe 😀
And then i have 2 different graphics cards iam gona try upgrade it with!

A Hercules HGC

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Or this random card, no ide what it is 😀

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Reply 10 of 13, by snufkin

Posted on 2022-01-14, 12:33

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_Roffe_ wrote on 2022-01-14, 08:23:

And then there is the keyboard that iam not sure if it is the standard AT keyboard? maybe 😀

If it's the 84 key, 10 Fn key version then it's probably based on the ModelF XT standard. It's not directly compatible with AT (although the connector's the same), but apparently some AT keyboards had a switch to put them in XT mode.

Reply 11 of 13, by _Roffe_

Posted on 2022-01-14, 13:53

_Roffe_ Offline

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snufkin wrote on 2022-01-14, 12:33:

_Roffe_ wrote on 2022-01-14, 08:23:

And then there is the keyboard that iam not sure if it is the standard AT keyboard? maybe 😀

If it's the 84 key, 10 Fn key version then it's probably based on the ModelF XT standard. It's not directly compatible with AT (although the connector's the same), but apparently some AT keyboards had a switch to put them in XT mode.

Have to look in to that! Might have a friend that have and old IBM at home..
What happens when you put ordinary AT keyboard in XT port? 😀

Reply 12 of 13, by snufkin

Posted on 2022-01-14, 14:28

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I don't think anything breaks, it just doesn't work. There are some converters to go from an AT keyboard to an XT machine: https://www.vcfed.org/forum/forum/vcwiki/vcwi … oard-converter=

Reply 13 of 13, by _Roffe_

Posted on 2022-01-14, 14:49

_Roffe_ Offline

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Location: Sweden

snufkin wrote on 2022-01-14, 14:28:

I don't think anything breaks, it just doesn't work. There are some converters to go from an AT keyboard to an XT machine: https://www.vcfed.org/forum/forum/vcwiki/vcwi … oard-converter=

Thanks!
Alot of converters needs to be invested in before a start up..
I want to do at least one start up before dishes and maybe open the PSU for a recap 😀

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