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<td class=xl107 colspan=2 width=954 style='mso-ignore:colspan;width:716pt'>Open8
CPU Core Generics</td>
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<td height=20 colspan=2 style='height:15.0pt;mso-ignore:colspan'></td>
<td class=xl67></td>
<td class=xl68></td>
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<tr height=20 style='height:15.0pt'>
<td height=20 class=xl69 style='height:15.0pt'>Option</td>
<td class=xl69>Argument Type</td>
<td class=xl70>Default</td>
<td class=xl72 width=893 style='width:670pt'>Description</td>
</tr>
<tr height=20 style='height:15.0pt'>
<td height=20 class=xl76 style='height:15.0pt;border-top:none'>Program_Start_Addr</td>
<td class=xl76 style='border-top:none;border-left:none'>16-bit Address</td>
<td class=xl103 style='border-top:none;border-left:none'>x"0000"</td>
<td class=xl78 width=893 style='border-top:none;border-left:none;width:670pt'>Initial
program counter location</td>
</tr>
<tr height=20 style='height:15.0pt'>
<td height=20 class=xl73 style='height:15.0pt;border-top:none'>ISR_Start_Addr</td>
<td class=xl73 style='border-top:none;border-left:none'>16-bit Address</td>
<td class=xl74 style='border-top:none;border-left:none'>x"FFF0"</td>
<td class=xl75 width=893 style='border-top:none;border-left:none;width:670pt'>Sets
the initial location of the interrupt vector table</td>
</tr>
<tr height=20 style='height:15.0pt'>
<td height=20 class=xl76 style='height:15.0pt;border-top:none'>Stack_Start_Addr</td>
<td class=xl76 style='border-top:none;border-left:none'>16-bit Address</td>
<td class=xl103 style='border-top:none;border-left:none'>x"03FF"</td>
<td class=xl78 width=893 style='border-top:none;border-left:none;width:670pt'>Initial
location of the CPU Stack - Must be located in accessible RAM</td>
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<tr height=40 style='height:30.0pt'>
<td height=40 class=xl73 style='height:30.0pt;border-top:none'>Allow_Stack_Address_Move</td>
<td class=xl73 style='border-top:none;border-left:none'>Boolean</td>
<td class=xl74 style='border-top:none;border-left:none'>FALSE</td>
<td class=xl75 width=893 style='border-top:none;border-left:none;width:670pt'>If
false, the RSP instruction will reset the stack pointer to
"Stack_Start_Addr" by default. If true, the RSP instruction will
either allow the stack pointer to be loaded from R1:R0 or copied to R1:R0
depending on the status of the PSR_GP4 (PSR_S) flag.</td>
</tr>
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<td height=80 class=xl108 style='height:60.0pt;border-top:none'>Enable_Auto_Increment</td>
<td class=xl108 style='border-top:none;border-left:none'>Boolean</td>
<td class=xl109 style='border-top:none;border-left:none'>FALSE</td>
<td class=xl110 width=893 style='border-top:none;border-left:none;width:670pt'>If
true, indexed instructions such as LDX, LDO, STX, STO will automatically
increment if an odd register is specified. The effect is similar to a normal
indexed instruction followed by an UPP instruction on the same register pair.
For example, LDX R5 (or LDX R4++) will result in R0 getting the data stored
at the address specified by R5:R4. Afterwards, the register pair R5:R4 will
be incremented by 1. If false, specifying either register in a register pair
will result in normal behavior.</td>
</tr>
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<td height=60 class=xl73 style='height:45.0pt;border-top:none'>BRK_Implements_WAI</td>
<td class=xl73 style='border-top:none;border-left:none'>Boolean</td>
<td class=xl74 style='border-top:none;border-left:none'>FALSE</td>
<td class=xl75 width=893 style='border-top:none;border-left:none;width:670pt'>If
true, the BRK instruction will cause the processor to halt as if an INT
instruction was executed, but without triggering an interrupt. This is useful
for pausing the CPU until an interrupt occurs. If false, the BRK instruction
flushes the pipeline and executes an extended (5-clock) NOP cycle.</td>
</tr>
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<td height=20 class=xl108 style='height:15.0pt;border-top:none'>Enable_NMI</td>
<td class=xl108 style='border-top:none;border-left:none'>Boolean</td>
<td class=xl109 style='border-top:none;border-left:none'>TRUE</td>
<td class=xl110 width=893 style='border-top:none;border-left:none;width:670pt'>Forces
bit 0 of the Interrupt Mask to 1, causing Interrupt 0 to be non-maskable.</td>
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<td height=40 class=xl73 style='height:30.0pt;border-top:none'>Sequential_Interrupts</td>
<td class=xl73 style='border-top:none;border-left:none'>Boolean</td>
<td class=xl74 style='border-top:none;border-left:none'>FALSE</td>
<td class=xl75 width=893 style='border-top:none;border-left:none;width:670pt'>Prohibits
interrupts from initiating an ISR if the I-bit is set, making ISRs
sequential. This potentially blocks interrupt priority by allowing a lower
level interrupt to block a higher level interrupt. This can be worked around
by clearing the I-bit in known interruptable ISRs.</td>
</tr>
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<td height=40 class=xl108 style='height:30.0pt;border-top:none'>RTI_Ignores_GP_Flags</td>
<td class=xl108 style='border-top:none;border-left:none'>Boolean</td>
<td class=xl109 style='border-top:none;border-left:none'>FALSE</td>
<td class=xl110 width=893 style='border-top:none;border-left:none;width:670pt'>If
set, preserves the general purpose flags GP_PSR4 (PSR_S) to GP_PSR7 on ISR
exit, allowing them to be persistently set by interrupts. The lower four flag
bits are always restored.</td>
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<td height=40 class=xl73 style='height:30.0pt;border-top:none'>Supervisor_Mode</td>
<td class=xl73 style='border-top:none;border-left:none'>Boolean</td>
<td class=xl74 style='border-top:none;border-left:none'>FALSE</td>
<td class=xl75 width=893 style='border-top:none;border-left:none;width:670pt'>If
set to true, enables restrictions on RSP, CLP/STP, and SMSK where they only
can alter internal registers if the I bit is set. Also initializes the CPU to
start with the I-bit set. If set to false, there are no restrictions on these
instructions.</td>
</tr>
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<td height=20 class=xl108 style='height:15.0pt;border-top:none'>Unsigned_Index_Offsets</td>
<td class=xl108 style='border-top:none;border-left:none'>Boolean</td>
<td class=xl109 style='border-top:none;border-left:none'>FALSE</td>
<td class=xl110 width=893 style='border-top:none;border-left:none;width:670pt'>Determines
whether the offset calculation for LDO/STO is signed or unsigned. Default
behavior is signed.</td>
</tr>
<tr height=40 style='height:30.0pt'>
<td height=40 class=xl108 style='height:30.0pt;border-top:none'>Rotate_Ignores_Carry</td>
<td class=xl108 style='border-top:none;border-left:none'>Boolean</td>
<td class=xl109 style='border-top:none;border-left:none'>FALSE</td>
<td class=xl110 width=893 style='border-top:none;border-left:none;width:670pt'>By
default, the V8 uRISC processor included the carry in rotations, making them
effectively 9-bit rotations. This generic modifies the ALU such that the
rotations work as classically defined and do NOT involve, or alter, the carry
bit.</td>
</tr>
<tr height=20 style='height:15.0pt'>
<td height=20 class=xl73 style='height:15.0pt;border-top:none'>Default_Interrupt_Mask</td>
<td class=xl73 style='border-top:none;border-left:none'>8-bit Data</td>
<td class=xl74 style='border-top:none;border-left:none'>x"FF"</td>
<td class=xl75 width=893 style='border-top:none;border-left:none;width:670pt'>Sets
the initial interrupt mask (note that bit 0 is ignored if Enable_NMI is set
TRUE)</td>
</tr>
<tr height=20 style='height:15.0pt'>
<td height=20 class=xl108 style='height:15.0pt;border-top:none'>Clock_Frequency</td>
<td class=xl108 style='border-top:none;border-left:none'>Real</td>
<td class=xl109 style='border-top:none;border-left:none'>-</td>
<td class=xl110 width=893 style='border-top:none;border-left:none;width:670pt'>Clock
frequency in Hz of the CPU clock. Used to configure the 1Mhz/1uSec tick pulse</td>
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