Subversion Repositories t48

Known bugs of the T48 uController core

======================================

Version: $Date: 2004-05-20 22:00:59 $

Release 0.1 BETA

----------------

******************************************************************************

External Program Memory ignored when EA = 0

The external Program Memory is always ignored when EA = 0 with the t8048 system

toplevel. Desired behaviour is to access external Program Memory when code

has to be fetched from an address location that is outside the internal

Program Memory.

Fixed in t8048.vhd 1.3

Fix will be included in next release.

******************************************************************************

ANL and ORL to P2 read port status instead of port output register

The ANL and ORL instructions for P2 read the port status and apply the logical

operation on this value. Instead, they should read the port output register

and operate on this value.

Fixed in p2.vhd 1.5

Regression test:

white_box/p2_port_reg_conflict

Fix will be included in next release.

******************************************************************************

Counter is not incremented

When in counter mode, the timer/counter module does not increment upon a

falling edge of T1. Reason is a typo in the code for the edge detection signal

t1_inc_s - it will never become true.

Fixed in timer.vhd 1.3

Regression tests:

black_box/cnt/cnt

black_box/cnt/int

Fix will be included in next release.