Editing Diagnostic Serial Console (section)

=== ROM Cartridge Specifications and Content ===

The documented TechStep ROM cartridges include:

'''ROM Pack 661-0150: CPU Tests Vol. 1 v1.01''' supporting Classic, SE, SE/30, II, IIx, IIcx models. This cartridge contains comprehensive logic board testing routines specifically designed for 68000 and early 68030-based systems.

'''ROM Pack 661-0157: SCSI HD Tests v1.0''' providing specialized testing for Apple SCSI drives with detailed controller validation and media verification routines.

'''ROM Pack 661-0147: CPU Tests Vol. 2 v1.0''' supporting LC, LC II, Classic II models with testing routines optimized for cost-reduced Mac architectures.

'''ROM Pack 661-0148: CPU Tests Vol. 3 v1.0''' covering IIci, IIsi, IIvi, IIvx, Performa 600 models with advanced testing for 68030 systems with integrated video and memory controllers.

Community preservation efforts have successfully archived most TechStep ROM images, enabling reproduction of cartridges using modern EPROM programmers. The reproduction process requires careful attention to chip selection, as larger ROM files designed for 27C1000 chips cannot be directly substituted into sockets designed for 27C512 chips due to pinout differences.