File:Radio Shack TRS-80 Model 4 floppy controller and RS-232C boards (Shelby Jueden).jpg
Summary
[edit | edit source].jpg&veaction=edit§ion=1){kind=link}
.jpg&action=edit§ion=1){kind=link}
The two option boards of a non-gate-array TRS-80 Model 4, mounted inside the case: on the left the floppy disk controller board, with an FD1793 controller at U6 and electrolytic capacitors C2 and C3; on the right the RS-232C board, with a TR1865 UART, a COM8116 baud-rate generator, electrolytics C8 and C9 fitted and the optional positions C1 and C2 empty, and the DB-25 connector at the bottom.
Source
[edit | edit source].jpg&veaction=edit§ion=2){kind=link}
.jpg&action=edit§ion=2){kind=link}
Wikimedia Commons: File:TRS-80 Model 4 Expansion Cards.jpg (retrieved 2026-10-21), downscaled to 1920 px wide.
Author
[edit | edit source].jpg&veaction=edit§ion=3){kind=link}
.jpg&action=edit§ion=3){kind=link}
Shelby Jueden
Licence
[edit | edit source].jpg&veaction=edit§ion=4){kind=link}
.jpg&action=edit§ion=4){kind=link}
Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0), as stated on Wikimedia Commons.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:14, 21 October 2026 | | 1,920 × 1,440 (775 KB) | Josh (talk | contribs) | TRS-80 Model 4 FDC and RS-232 boards photo from Wikimedia Commons (CC BY-SA 4.0) |
You cannot overwrite this file.
File usage
The following page uses this file:
.jpg&oldid=28768){kind=link}