State of the Ark - Radio Shack TRS-80 Model 4

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Radio Shack TRS-80 Model 4

[16k] Radio Shack TRS-80 Model 4

Type:	Micro Computer
Release Date:
Value New:
Current Value:
Rarity:

Specifications:	Radio Shack TRS-80 Model 4
Size:	470 x 520 x 320mm
Weight:	22.5kg
CPU:	SGS Z80A
Clock Speed:	4MHz
Memory:	A total of 64Kbytes RAM. Expandable to 128Kbytes
Video Display:	The video display is capable of 80 X 24 chars when booted up in TRS-DOS (when using model 3 mode it reverts to 64 X 16)
Storage:	Built in dual 5.25" floppy disk drives
Interfaces:	Built in 12-inch display. Edge connectors for cassette, printer, hard drive, external floppy drives. 25 pin 'D-type' (RS232 interface?)
Operating System/s:	CP/M 80, TRS-DOS, NEWDOS
Input devices:	Keyboard with QWERTY layout with 80 typewriter-style keys, separate numeric keypad and 3 function keys

My Radio Shack TRS-80 Model 4's

Acquired:	May-1996
Status:	Working
Condition:	Good
Serial #:	Recorded
Box:	No
Manuals:	No

Notes

I found this hiding in a corner of a local surplus electronics store. Cleaned the outside of the case, then opened up the case. There are 9 screws holding the case together, this thing wasn't made for easy access. On opening the case I found lots of foam packing chips lodged in nearly every hard to get at place, took me 2 hours to get all the foam chips out.

Acquired:	May-1997
Status:	Working
Condition:	Good
Serial #:	Recorded
Box:	No
Manuals:	No

Notes

Donated to me by a local business after it upgraded to a PC platform along with quite an amount of software and associated manuals.

References

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