AT&T 6300
Also known as the Olivetti M24.
Computers in Collection
General Info
…
AT&T 6300, serial 0304801

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

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

| 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…
