Below are the currently available Other ISS, click on them to find more information.

Altera Nios II_Nios_II_E
Altera Nios II_Nios_II_S
Altera Nios II_Nios_II_F
Xilinx MicroBlaze_ISA
Xilinx MicroBlaze_V10_00
Xilinx MicroBlaze_V9_50
Xilinx MicroBlaze_V8_20
Xilinx MicroBlaze_V8_10
Xilinx MicroBlaze_V8_00
Xilinx MicroBlaze_V7_30
Xilinx MicroBlaze_V7_20
Xilinx MicroBlaze_V7_10
Xilinx MicroBlaze_V7_00
SiFive_U54
SiFive_E51
SiFive_E31
Microsemi_MiV_RV32IMA
Microsemi_CoreRISCV
Andes_NX25
Andes_N25
openCores_generic
Synopsys ARC_0x32
Synopsys ARC_0x31
Synopsys ARC_0x22
Synopsys ARC_0x21
Synopsys ARC_700
Synopsys ARC_605
Synopsys ARC_600
Other ISS aliases