83Plus:Ports:15

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Revision as of 07:49, 11 July 2011 by Thepenguin77 (Talk | contribs)

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Synopsis

Port Number: 15h

Function: ASIC Version

This port reports the ASIC version from which the number of ram pages and USB driver revision can be determined. On the 83+, it does something different.

Read Values

  • 33 - TI-REF 83PL2M/TA2 - No USB driver and has 128KB of RAM
  • 44 - TI-REF 83PLUSB/TA2 - Uses old USB driver and has 128KB of RAM
  • 45 - TI-REF 84PLUSB/TA3 - Uses new USB driver and has 128KB of RAM
  • 55 - TI-REF 84PLC/TA1 - Uses new USB driver and has 48KB of RAM

Write Values

No effect

Comments

Even though this port is in the protected range, it can't be written to. So there's really no reason to call it protected.