Intel A80486 backside forms

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Hello,
I'm writing a program to manage my collection.
Actually im searching all backside forms of the i486 chips.

For now, i have found 5 kinds:

a) 26 mm x 26 mm
b) 23.5 mm x 23.5 mm
c) 21 mm x 21 mm
d) 19 mm x 19 mm
e) 19 mm x 24 mm

a)
b)
c)
d)
e)
I can't find any infos on the intel website about these differents.
Does anyone know documents / links about the form diffs?

Has anyone an other kind of "backside" in his collection?

Hope for help and greetings
carsten

[Mixeur]

black cap is missing

[chrissie]

and without cap is missing

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Thank you, i have noticed the black cap.

Hey missing cap is new to me! Thank you!!

This is what i have for now:

_intelB = {"intel_r","intel^r","intel"});
_i486B = {"i486","i486tmDXtm","i486tmDX2tm","i486tmDX4tm","i486tmSXtm"}
_packageB = {"A","FA","FC","KU","SB"}
_partB = {"80486","80487"}
_featuresB = {"","DX","SL","SX"}
_multiplierB = {"","2","4"}
_frequencyB = {"","16","20","25","33","40","50","66","75","100"}
_countryTB = {"C","L"}
_powerB = {"","&","&E","SB"}
_cacheB = {"","W"}
_voltageB = {"","3V","5V","3 VOLT"}
_clockB = {"","1X","2X"}
_afterB = {"","T","LOWPOWER","LOW POWER"}
_colorB = {"gold","black"}
_countryBB = {"C","L"}
_iINTELB = {"INTEL M C 1989","INTEL M C '89'92","INTEL M C '89'93"}

[JAC]

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>What are those measurements exactly? do you mean 26mm x 26mm? etc
Yes of course. I have edited it, thank you!

>I have over a 100 Intel 486 in my collection,
>some are plastic qfp, but most are ceramic.

>Check them out at:

>http://www.cpustack.net/intel486.shtml

>Can you post a link to your info when it is finished?
Yes of course.

Interesting page, the i486 with white printings was new to me.