We corrected a problem that affected printing performance from Macintosh Performa and Power Macintosh 5400, 6360 and 6400 series computers to some LocalTalk printers. This fix was included in Mac OS 8. We recommend that customers who encounter this problem upgrade their systems to Mac OS 8 or newer versions of the Mac OS.
Note that the Power Macintosh 5500 and 6500, introduced after the systems above but prior to when Mac OS 8 became available, have this fix included in their firmware.
The printers the problems arose with and corrected by Mac OS 8 are the:
- LaserWriter NT
- Some GCC BLP-class of printers from GCC Technologies
- LaserWriter 16/600 having the original v1.0 IOP ROM: LW 16/600s with v2.0 or v3.0 IOP ROMs function fine. Other Tech Info Library articles discuss these IOP ROMs revisions in detail.