rsp.c:
        LBV   ... seems to work
        LSV   ... seems to work
        LLV   ... seems to work
        LDV   ... seems to work
        LQV   ... seems to work
        LRV
        LPV
        LUV
        LHV
        LFV
        LWV
        LTV
        SBV   ... seems to work
        SSV   ... seems to work
        SLV   ... seems to work
        SDV   ... seems to work
        SQV   ... seems to work
        SRV
        SPV
        SUV
        SHV
        SFV
        SWV
        STV

        VABS
        VADD  ... seems to work in all cases
        VADDB
        VADDC
        VACCB
        VAND
        VCL
        VCH
        VCR
        VEQ   ... works partially
        VEXTN
        VEXTQ
        VEXTT
        VGE   ... works partially
        VINST
        VINSQ
        VINSN  
        VLT   ... works partially
        VMACF
        VMACQ
        VMACU
        VMADH 
        VMADL
        VMADM
        VMADN
        VMOV
        VMRG 
        VMUDH 
        VMUDL
        VMUDM
        VMUDN
        VMULF
        VMULU
        VMULQ
        VNAND
        VNE   ... works partially
        VNOOP 
        VNOR
        VNXOR   
        VOR
        VRCP
        VRCPH
        VRCPL
        VRNDN
        VRNDP
        VRSQ
        VRSQH
        VRSQL
        VSAC
        VSAD
        VSAW   
        VSUB
        VSUBB 
        VSUBC
        VSUCB
        VSUM
        VSUT
        VXOR





cpu.c:
        cache ???
        sync ???



cop0.c:
        bcf
        bct
        bcfl
        bctl



cop1.c:
        c.un.*
        c.ueq.* ???
        c.olt.*
        c.ult.*
        c.sf.*
        c.ngle.*
        c.seq.*
        c.ngl.*
        c.nge.* ???
        c.ngt.* ???



cop2.c:
        bcf
        bct
        bcfl
        bctl

        do we need it?



rdram:
        -

rdram registers:
        everything - do we need them?

sp dmem:
        -

sp imem:
        -

sp reg:
        bits
                [19:12] count
                [31:20] skip
        in
                SP_RD_LEN_REG
                SP_WR_LEN_REG
        when doing a dma transfer

        the last 3 regs have to be implemented

sp pc:
        -

sp ibist:
        to be implemented

dpc reg:
        -

dps reg:
        to be implemented

        do we need it?

mi reg:
        bits [6:0] (init length) of MI_MODE_REG (what do they do/mean?)

vi reg:
        the main regs are implemented.
        don't know if the others are needed for emulation.

ai reg:
        -

pi reg:
        pic reset
        various regs - i don't know if they are needed

ri reg:
        there is just memory.
        hope that's ok.

si reg:
        -




so much ...
