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Rev 4265 Rev 4287
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        db      0x35, 'MX+'     ; id=5
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        db      0x35, 'MX+'     ; id=5
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        db      0x37, 'EX '     ; id=6
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        db      0x37, 'EX '     ; id=6
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Vortex86SoCnum = ($ - Vortex86SoClist) / 4      ; Calculate the total number of known Vortex86 CPUs (if id=Vortex86SoCnum+1 --> unknown SoC)
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Vortex86SoCnum = ($ - Vortex86SoClist) / 4      ; Calculate the total number of known Vortex86 CPUs (if id=Vortex86SoCnum+1 --> unknown SoC)
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endg
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endg
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; When in debug mode, perform SoC detection regardless of the actual CPU vendor (even for vendors other than DMP)
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; When in normal (not debug) mode, check the CPU vendor first, and perform SoC detection only if vendor is 'Vortex86 SoC'
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if ~ VORTEX86DEBUG
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        cmp     [cpu_vendor], 'Vort'
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        jnz     .Vortex86end            ; If the CPU vendor is not 'Vortex86 SoC', skip the SoC detection
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end if
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        mov     dx, 0xcf8               ; CF8h = Vortex86 PCI Configuration Address port
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        mov     dx, 0xcf8               ; CF8h = Vortex86 PCI Configuration Address port
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        mov     eax, 0x80000090         ; 0x80000090 = Starting PCI address to read from (32-bit register - accessed as DWORD)
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        mov     eax, 0x80000090         ; 0x80000090 = Starting PCI address to read from (32-bit register - accessed as DWORD)
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        out     dx, eax                 ; Send request to PCI address port to retrieve data from this address
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        out     dx, eax                 ; Send request to PCI address port to retrieve data from this address
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        mov     dx, 0xcfc               ; CFCh = Vortex86 PCI Configuration Data port
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        mov     dx, 0xcfc               ; CFCh = Vortex86 PCI Configuration Data port
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        in      eax, dx                 ; Read data (SoC type) from PCI data port
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        in      eax, dx                 ; Read data (SoC type) from PCI data port
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if VORTEX86DEBUG
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; // Used for debug purposes: testing in emulator and in non-Vortex86 CPU computers
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if VORTEX86DEBUG                        ; When in debug mode, pretend that we received port output equal to "VORTEX86DEBUGVALUE"
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        mov     eax, VORTEX86DEBUGVALUE
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        mov     eax, VORTEX86DEBUGVALUE
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end if
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end if
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        mov     [Vortex86CPUcode], eax
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        mov     [Vortex86CPUcode], eax
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        DEBUGF  1, "%x (%s): ", eax, Vortex86CPUcode
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        DEBUGF  1, "%x (%s): ", eax, Vortex86CPUcode
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        cmp     ax, 4d44h               ; Check whether it's Vortex86 family (all Vortex86 SoC have ID in form of "0xNN504d44")
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        cmp     ax, 4d44h               ; Check whether it's Vortex86 family (all Vortex86 SoC have ID in form of "0xNN504d44")
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        jnz     .notVortex86
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        jnz     .notVortex86
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        shr     eax, 16                 ; Discard lower word in EAX which is always 4d44h in Vortex86 family
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        shr     eax, 16                 ; Discard lower word in EAX which is always 4d44h in Vortex86 family
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        cmp     al, 50h                 ; The 3rd byte is always 50h in Vortex86 SoC
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        cmp     al, 50h                 ; The 3rd byte is always 50h in Vortex86 SoC (if this is the case, we need just the highest byte)
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        jnz     .notVortex86
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        jnz     .notVortex86
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        shr     ax, 8                   ; Discard 3rd byte in EAX, the highest byte determines the SoC type
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        mov     bl, al                  ; Copy SoC type to BL since EAX (that contains AL) is used implicitly in "LODSD" command below
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        mov     bl, ah                  ; Copy SoC type to BL since EAX (that includes AH) is used implicitly in "LODSD" command below
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        mov     esi, Vortex86SoClist    ; ESI points to the start of Vortex86SoClist (used implicitly in "LODSD" command below)
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        mov     esi, Vortex86SoClist    ; ESI points to the start of Vortex86SoClist (used implicitly in "LODSD" command below)
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        xor     ecx, ecx                ; Zero ECX (it is used as counter)
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        xor     ecx, ecx                ; Zero ECX (it is used as counter)
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        cld                             ; Clears the DF flag in the EFLAGS register (DF=0 --> String operations increment ESI)
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        cld                             ; Clears the DF flag in the EFLAGS register (DF=0 --> String operations increment ESI)
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@@:
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@@:
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        cmp     ecx, Vortex86SoCnum     ; Check if we iterated Vortex86SoCnum times already (i.e. went over the entire Vortex86SoClist)
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        cmp     ecx, Vortex86SoCnum     ; Check if we iterated Vortex86SoCnum times already (i.e. went over the entire Vortex86SoClist)
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        DEBUGF  1, "0 (NULL)\n"
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        DEBUGF  1, "0 (NULL)\n"
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        jmp     .Vortex86end
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        jmp     .Vortex86end
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.unknownVortex86:
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.unknownVortex86:
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        mov     [Vortex86CPUid], cl                 ; Save the CPUid (Vortex86SoCnum+1=Unknown Vortex86)
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        mov     [Vortex86CPUid], cl                 ; Save the CPUid (Vortex86SoCnum+1=Unknown Vortex86)
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        DEBUGF  1, "unknown Vortex86 CPU (has id=%d, last known is %d)\n", [Vortex86CPUid]:1, Vortex86SoCnum
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        DEBUGF  1, "unknown Vortex86 CPU (id=%d, last known is %d)\n", [Vortex86CPUid]:1, Vortex86SoCnum
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        jmp     .Vortex86end
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        jmp     .Vortex86end
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