| Line 297... |
Line 297... |
// By default implementation of l.addc/l.addic
|
// By default implementation of l.addc/l.addic
|
// instructions is enabled in case you need them.
|
// instructions is enabled in case you need them.
|
// If you don't use them, then disable implementation
|
// If you don't use them, then disable implementation
|
// to save area.
|
// to save area.
|
//
|
//
|
//`define OR1200_IMPL_ADDC
|
`define OR1200_IMPL_ADDC
|
|
|
//
|
//
|
// Implement l.sub instruction
|
// Implement l.sub instruction
|
//
|
//
|
// By default implementation of l.sub instructions
|
// By default implementation of l.sub instructions
|
| Line 319... |
Line 319... |
// to be compliant with the simulator. However SR[CY]
|
// to be compliant with the simulator. However SR[CY]
|
// is explicitly only used by l.addc/l.addic/l.sub
|
// is explicitly only used by l.addc/l.addic/l.sub
|
// instructions and if these three insns are not
|
// instructions and if these three insns are not
|
// implemented there is not much point having SR[CY].
|
// implemented there is not much point having SR[CY].
|
//
|
//
|
//`define OR1200_IMPL_CY
|
`define OR1200_IMPL_CY
|
|
|
|
//
|
|
// Implement carry bit SR[OV]
|
|
//
|
|
// Compiler doesn't use this, but other code may like
|
|
// to.
|
|
//
|
|
`define OR1200_IMPL_OV
|
|
|
|
//
|
|
// Implement carry bit SR[OVE]
|
|
//
|
|
// Overflow interrupt indicator. When enabled, SR[OV] flag
|
|
// does not remain asserted after exception.
|
|
//
|
|
`define OR1200_IMPL_OVE
|
|
|
|
|
//
|
//
|
// Implement rotate in the ALU
|
// Implement rotate in the ALU
|
//
|
//
|
// At the time of writing this, or32
|
// At the time of writing this, or32
|
| Line 823... |
Line 840... |
`define OR1200_SR_DME 5
|
`define OR1200_SR_DME 5
|
`define OR1200_SR_IME 6
|
`define OR1200_SR_IME 6
|
`define OR1200_SR_LEE 7
|
`define OR1200_SR_LEE 7
|
`define OR1200_SR_CE 8
|
`define OR1200_SR_CE 8
|
`define OR1200_SR_F 9
|
`define OR1200_SR_F 9
|
`define OR1200_SR_CY 10 // Unused
|
`define OR1200_SR_CY 10 // Optional
|
`define OR1200_SR_OV 11 // Unused
|
`define OR1200_SR_OV 11 // Optional
|
`define OR1200_SR_OVE 12 // Unused
|
`define OR1200_SR_OVE 12 // Optional
|
`define OR1200_SR_DSX 13 // Unused
|
`define OR1200_SR_DSX 13 // Unused
|
`define OR1200_SR_EPH 14
|
`define OR1200_SR_EPH 14
|
`define OR1200_SR_FO 15
|
`define OR1200_SR_FO 15
|
`define OR1200_SR_TED 16
|
`define OR1200_SR_TED 16
|
`define OR1200_SR_CID 31:28 // Unimplemented
|
`define OR1200_SR_CID 31:28 // Unimplemented
|
