03533: All 68020 cpu based drivers: 68020 disassembler bug: a 32-bit address displacement's upper 16-bit is desappear

- As of 0.139u2, some drivers and options show "16-bit EEPROM set with 8-bit data". Check 4030.
- Haze is calling for mixing issues with *SINGLE* VDP games in toaplan2.c. Check 4044.

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Category [?]

Severity [?]

Reproducibility

Date Submitted

Last Update

03533

Debugger

Minor

Always

2009-11-13 23:56

2010-03-11 04:51

Tester

Naibo

View Status

Public

Assigned To

R. Belmont

Platform

Priority

normal

Resolution

Fixed

Windows XP (32-bit)

Status [?]

Resolved

Driver

Projection

None

Version

0.134u4

ETA

None

Fixed in Version

0.137

Build

Normal

Summary

03533: All 68020 cpu based drivers: 68020 disassembler bug: a 32-bit address displacement's upper 16-bit is desappear

Description

See attatched screen shot:
The displacement to A0 is "FFFF0000", but MAME's 68020 disassembler displays as (0, A0)

Steps To Reproduce

Enter debug mode, input this binary code 3230 8170 FFFF 0000 (or any other opcode with 32-bit displacement) into any RAM address, and see it in a desassembler window

Additional Information

Flags

Regression Version

Affected Sets

All 68020 cpu based drivers

Old BugID

Attached Files

68020.PNG (4,574 bytes) 2009-11-13 23:56

Relationships

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