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- from Rev 211 to Rev 212
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Rev 211 → Rev 212
/trunk/KNOWN_BUGS
1,13 → 1,53
|
Known bugs of the T48 uController core |
====================================== |
Version: $Date: 2005-09-13 21:27:12 $ |
Version: $Date: 2005-11-02 21:16:34 $ |
|
|
Release 0.6 BETA |
---------------- |
|
******************************************************************************* |
P2 Port value restored after expander access |
|
After access to expander interface (ANLD Pp; MOVD A,Pp; MOVD Pp,A; ORLD Pp) |
the port value of P2 is restored. This is wrong according to chapter "Port 2 |
Operations" of the "Expanded MCS-48 System" manual. It states that previously |
latched I/O information will be removed and not restored. |
|
Fixed in: |
p2.vhd 1.8 |
Fix will be included in next release. |
|
******************************************************************************* |
Problem when INT and JMP |
|
When code is executed from Memory Bank 1, the injected CALL triggered by the |
interrupt does not always vector to address 3. This happens because of a bus |
collision between the decoder unit and the db_bus unit. The resulting address |
can be either: |
* 000h, 001h, 002h, 003h for external and timer interrupt |
* 004h, 005h, 006h, 007h for timer interrupt |
|
The problem was introduced in release 0.6 BETA when the glitch on PCH was |
fixed. |
|
Fixed in: |
decoder.vhd 1.21 |
New regression test: int_on_mb1 |
Fix will be included in next release. |
|
|
|
Release 0.5 BETA |
---------------- |
|
******************************************************************************* |
P2 Port value restored after expander access |
|
See above. |
|
******************************************************************************* |
Target address of JMP and CALL to Program Memory Bank 1 corrupted by interrupt |
|
An interrupt occuring during the execution of a JMP instruction, forces bit 11 |
53,6 → 93,11
---------------- |
|
******************************************************************************* |
P2 Port value restored after expander access |
|
See above. |
|
******************************************************************************* |
Target address of JMP and CALL to Program Memory Bank 1 corrupted by interrupt |
|
See above. |
95,6 → 140,11
---------------- |
|
******************************************************************************* |
P2 Port value restored after expander access |
|
See above. |
|
******************************************************************************* |
Target address of JMP and CALL to Program Memory Bank 1 corrupted by interrupt |
|
See above. |
140,6 → 190,11
---------------- |
|
******************************************************************************* |
P2 Port value restored after expander access |
|
See above. |
|
******************************************************************************* |
MSB of Program Counter changed upon PC increment |
|
See above. |
186,6 → 241,11
---------------- |
|
******************************************************************************* |
P2 Port value restored after expander access |
|
See above. |
|
******************************************************************************* |
MSB of Program Counter changed upon PC increment |
|
See above. |