The following Sun SPARC system architectures and models are supported:
sun4
first generation SPARC systems on VMEbus:
Sun 4/100 series (14.28 MHz)
Sun 4/200 series (16.67 MHz)
Sun 4/300 series (25 MHz)
sun4c
desktop SPARC systems with Sbus:
SPARCstation 1 (20 MHz)
SPARCstation 1+ (25 MHz)
SPARCstation 2 (40 MHz)
SPARCstation SLC (20 MHz)
SPARCstation ELC (33 MHz)
SPARCstation IPC (25 MHz)
SPARCstation IPX (40 MHz).
sun4m
desktop SPARC systems with Mbus for CPUs, and Sbus:
SPARCclassic (50 MHz microSPARC I)
SPARCstation LX (50 MHz microSPARC I)
SPARCstation 4 (70 MHz microSPARC II)
SPARCstation 5 (70, 85, 110 MHz microSPARC II)
SPARCstation 5 (170 MHz TurboSPARC)
SPARCstation 10M (36 MHz SuperSPARC I)
SPARCstation 20M (50 MHz SuperSPARC I)
SPARCstation 10 (Mbus modules)
SPARCstation 20 (Mbus modules)
The SPARCstation 2 and IPX can be upgraded with a Weitek PowerUP CPU that is clock-doubled (i.e. internally it runs at 80 MHz).
NetBSD supports this configuration.
Hardware level clones of these systems from other manufacturers will likely work (e.g. Xerox, Tatung, Axil, Cycle); other systems which have a SPARC CPU but do not use Sun's hardware architecture (e.g. Solbourne) will likely not work.
The sun4m architecture with Mbus modules for the CPUs is supported with the following modules with only one CPU:
SM41
40 MHz SuperSPARC I with 1MB SuperCACHE
SM51
50 MHz SuperSPARC I with 1MB SuperCACHE
SM61
60 MHz SuperSPARC I with 1MB SuperCACHE
SM71
75 MHz SuperSPARC II with 1MB SuperCACHE
SM81
85 MHz SuperSPARC II with 1MB SuperCACHE
HS11
100 MHz Ross Technology hyperSPARC
HS21
125 MHz Ross Technology hyperSPARC
M151
150 MHz Ross Technology hyperSPARC
This list is not exhaustive;
NetBSD is continuously being improved, and may well run on Mbus CPU modules not listed here.
There is also some support for Sun JavaStation computers based on the microSPARC CPU.
NetBSD does not yet properly support multiprocessor systems, but will run on one processor of a multiprocessor system.
The Sun 4/400 series, and sun4d (SPARCcenter 1000, 1000E, and 2000) are not supported.
The sun4u (UltraSPARC 64-bit) architectures are supported by
NetBSD/sparc64.