{{tag>collection_mcmaster vendor_cbm vendor_csg vendor_mos year_1988 foundry_unknown tech_3um}}

I was told it was from an I/O card, presumably a Commodore A2232 serial port card for the Amiga computer


====== Package ======

Label (top):

<code>
CSG
65CE02-2
(C) (M) (C) CBM 1987, 88
1690 52
</code>

Where:

    * CSG: Commodore Semiconductor Group
    * CBM: Commodore Business Machines
    * MOS has fallen out of the loop having been bought by Commodore

Label (bottom):

<code>
HONG KONG
HH125907
MP150SG
</code>

{{:mcmaster:cbm:65ceo2:package_top.jpg?300}}{{:mcmaster:cbm:65ceo2:package_bottom.jpg?300}}{{:mcmaster:cbm:65ceo2:package_die0.jpg?300}}{{:mcmaster:cbm:65ceo2:package_die1.jpg?300}}{{:mcmaster:cbm:65ceo2:package_die2.jpg?300}}


====== Die ======

Approximate size: 4.4 x 3.7 mm

Text:

<code>
4502R2
Option 1
(M) 1988 CBM
</code>

{{:mcmaster:cbm:65ceo2:package_die3.jpg?300}}


====== Map ======


{{:mcmaster:cbm:65ceo2:die2.jpg?300}}

[[http://siliconpr0n.org/map/cbm/65ce02-r2/mcmaster_mz_mit20x/|Top metal @ Mit20x]]
  * [[http://siliconpr0n.org/map/cbm/65ce02-r2/single/cbm_65ce02-r2_mcmaster_mz_mit20x.jpg|Single]] (12509×10688, 53 MB)


{{:mcmaster:cbm:65ceo2:etch1-13_mit20x.jpg?300|}}

[[http://siliconpr0n.org/map/cbm/65ce02-r2/mcmaster_etch1-13_mit20x/|Etch 1-13 @ Mit20x]]
  * [[http://siliconpr0n.org/map/cbm/65ce02-r2/single/cbm_65ce02-r2_mcmaster_etch1-13_mit20x.jpg|Single]] (12442x10722, 59 MB)

{{:mcmaster:cbm:65ceo2:etch1-16_mit20x.jpg?300|}}

[[http://siliconpr0n.org/map/cbm/65ce02-r2/mcmaster_etch1-16_mit20x/|Etch 1-16 @ Mit20x]]
  * [[http://siliconpr0n.org/map/cbm/65ce02-r2/single/cbm_65ce02-r2_mcmaster_etch1-16_mit20x.jpg|Single]] (12433x10684, 53 MB)

{{:mcmaster:cbm:65ceo2:etch1-25_mit20x.jpg?300|}}

Sometime between etch16 and etch25 I believe a beaker contaminted with nitric was used.  This caused unintentional staining of the chip as well as etching in some of the less pure areas of the chip causing pitting.

[[http://siliconpr0n.org/map/cbm/65ce02-r2/mcmaster_etch1-25_mit20x/|Etch 1-25 @ Mit20x]]
  * [[http://siliconpr0n.org/map/cbm/65ce02-r2/single/cbm_65ce02-r2_mcmaster_etch1-25_mit20x.jpg|Single]] (12416x10696, 45 MB)