Texas Instruments Professional Computer Error 21H: Illegal disk address

Texas Instruments Professional Computer · taken from the manufacturer’s manual, pages cited

Error code21H

Illegal disk address The manual lists no action for this code.

Model
Texas Instruments Professional Computer
Display shows
Illegal disk address (21H)
Type
Error code
Source
Manual p. 194

What 21H means

Illegal disk address p. 194

If 21H is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Texas Instruments service.

Open the manual at page 194 All Professional Computer error codes Manual details & download

This page summarises what the manufacturer’s manual says about 21H; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Texas Instruments. Found a mistake? Report an error.