Editing DSP
Jump to navigation
Jump to search
The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then publish the changes below to finish undoing the edit.
| Latest revision | Your text | ||
| Line 3: | Line 3: | ||
DSP firmware resides in a mask-ROM inside the DSP. Several firmware versions might exist for the same DSP hardware revision. | DSP firmware resides in a mask-ROM inside the DSP. Several firmware versions might exist for the same DSP hardware revision. | ||
At least one version of the DSP's firmware (specifically the CXD3098Q) has a tendency to crash MechaCon by sheer bad luck or on badly readable discs (e.g. badly burned/low-quality DVD-R discs or scratched original discs), overvolting the focus/tracking coils of the laser and killing them and also the driver IC in the process. Several hardware-based mitigations/"fixes" have been developed by the community to address this issue with varying degrees of success. The most well known of these fixes have been the "Romeo-mod"/"LA-fix" for SCPH-500xx/5500x consoles and "summ0ne's fix" for some SCPH-700xx consoles; however, the | At least one version of the DSP's firmware (specifically the CXD3098Q) has a tendency to crash MechaCon by sheer bad luck or on badly readable discs (e.g. badly burned/low-quality DVD-R discs or scratched original discs), overvolting the focus/tracking coils of the laser and killing them and also the driver IC in the process. Several hardware-based mitigations/"fixes" have been developed by the community to address this issue with varying degrees of success. The most well known of these fixes have been the "Romeo-mod"/"LA-fix" for SCPH-500xx/5500x consoles and "summ0ne's fix" for some SCPH-700xx consoles; however, the most reliable fix is the Matrix team's PIC-fix which monitors communication between DSP and MechaCon and turns off the console when a crash occurs. | ||
== Revisions == | == Revisions == | ||
*CXD1869Q (GH-001, GH-003) | *CXD1869Q (GH-001, GH-003) | ||
*CXD1869AQ (GH-004, GH-005, GH-006, GH-007, GH-008, GH-010, GH-012, GH-013, GH-014) | *CXD1869AQ (GH-004, GH-005, GH-006, GH-007, GH-008, GH-010, GH-012, GH-013, GH-014) | ||
*CXD1869BQ (GH-010, GH-012, GH-013, GH-014) | *CXD1869BQ (GH-010, GH-012, GH-013, GH-014) | ||
*CXD1886Q (GH-013, GH-014, GH-015, GH-016) | *CXD1886Q (GH-013, GH-014, GH-015, GH-016) | ||
*CXD3098Q (GH-017, GH-018, GH-019, GH-022, GH-023, GH-026, GH-027, GH-029, GH-032, GH-035, GH-036, GH-037, GH-040, GH-041, GH-051, GH-052, GH-061, XPD-001, XPD-005) | *CXD3098Q (GH-017, GH-018, GH-019, GH-022, GH-023, GH-026, GH-027, GH-029, GH-032, GH-035, GH-036, GH-037, GH-040, GH-041, GH-051, GH-052, GH-061, XPD-001, XPD-005) | ||
** Has a | ** Has a bug in the firmware which causes MechaCon to crash/freeze when bad sectors are read (e.g. on badly burned or scratched discs). This likelyhood is increased on ARM-based Dragon [[MechaCon]], thus SCPH-500xx/5500x units up to some SCPH-700xx units. Some later subrevisions of GH-032/GH-035 board implement some safety circuit hotfix to prevent this from happening. | ||
*CXD3098AQ (GH-052, GH-061, GH-062, GH-070, GH-071, GH-072) | *CXD3098AQ (GH-052, GH-061, GH-062, GH-070, GH-071, GH-072) | ||