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AT&T 6300

Also known as the Olivetti M24.

Computers in Collection

General Info

AT&T 6300, serial 0304801

AT&T 6300 waiting for a boot floppy

Inventory

Received from Craigslist seller in Tacoma, Washington on 2018/Jun/30.

Case

Attribute Value
Manufacturer AT&T / Olivetti
Model CPU 2/E-B
Serial 0304801
Markings “Made in Italy”
Source 2018/Jun/30, Craigslist, Tacoma WA US

Backplane Board

Features enormous jumper wires from the power supply – Definitely a telecommunications industry aesthetic!

Attribute Value
Manufacturer Olivetti
Part TODO:
Serial TODO:
Markings “963461 V IF315 NA 12/85 FR 63963”, “COPYRIGHT (C) OLIVETTI 1985 IF314”, “240019868”
Source 2018/Jun/30, Craigslist, Tacoma WA US

Motherboard

AT&T 6300 motherboard

TODO: Remove the battery!

Attribute Value
Manufacturer Olivetti?
Part TODO:
Serial TODO: (bar code unreadable in photos)
Markings “BA 121 339295 D/05-A-S-B4”, “PC1050 MOTHER BD.”, “0091-05-00 REV P4”
Source 2018/Jun/30, Craigslist, Tacoma WA US

CRT Controller Card

Attribute Value
Manufacturer Olivetti
Part TODO:
Serial TODO:
Markings “337299 F GO318 05 9/85 ER 85686”, “COPYRIGHT (C) OLIVETTI 1984”, “GO318 COO-339286C/01-A-S-D4” (hard to read), “PC1050 CRT CNTR 0096-05-00 REV P4”
Source 2018/Jun/30, Craigslist, Tacoma WA US

Modem Card

Attribute Value
Manufacturer Cardinal(?)
Part TODO:
Serial TODO:
Markings “MB2296SR 122”, “FCC ID:GDE0101”, “REG:GDEUSA-65248-FA-E”, “170-0101-001R03”
ICs PLCC SC11198CV/AAC, PLCC SC11011CV/ADA
Source 2018/Jun/30, Craigslist, Tacoma WA US

Date and Time Card

AT&T 6300 date and time card with corroded Varta battery

Attribute Value
Manufacturer Kouwell?
Model KW-511?
Battery Varta (leaking!)
Source 2018/Jun/30, Craigslist, Tacoma WA US

TODO: Remove the battery!

Internal Floppy Drive (item 1)

Attribute Value
Manufacturer Panasonic
Model JU-455-5 ACG
Serial L1716 925137
Markings “LR55467 E66484”
Description half-height 5.25” floppy drive
Source 2018/Jun/30, Craigslist, Tacoma WA US

TODO: Drive A or B?

Internal Floppy Drive (item 2)

Attribute Value
Manufacturer Panasonic
Model JU-455-5 ACG
Serial L1639 449897
Markings “LR55467 E66484”
Description half-height 5.25” floppy drive
Source 2018/Jun/30, Craigslist, Tacoma WA US

TODO: Drive A or B?

CRT Monitor

Attribute Value
Manufacturer AT&T?
Model CRT 313-B
Serial 2080335
Description green phosphor
Source 2018/Jun/30, Craigslist, Tacoma WA US

Keyboard

Attribute Value
Manufacturer AT&T?
Model KBD 301
Serial 1864870
Source 2018/Jun/30, Craigslist, Tacoma WA US

Maintenance Log

While checking some disks for content (or even readability), I was hearing lots of scratching from the drive. The scratching would change character from time to time. Once, it got quite loud, and then quiet. Soon after, the drive would not read any floppies, including ones which listed mere minutes earlier. Very interesting. Would a cleaning help? Too bad I don’t have the cleaner with me…

AT&T 6300 transferring data via serial port