mirror of
https://github.com/ariejan/i6502.git
synced 2024-11-18 17:13:01 +00:00
29 lines
977 B
Go
29 lines
977 B
Go
package i6502
|
|
|
|
import (
|
|
"fmt"
|
|
)
|
|
|
|
type Instruction struct {
|
|
OpType // Embed OpType
|
|
|
|
Op8 byte // 8-bit operand for 2-byte instructions
|
|
Op16 uint16 // 16-bit operand for 3-byte instructions
|
|
|
|
Address uint16 // Address location where this instruction got read, for debugging purposes
|
|
}
|
|
|
|
// Return a string containing debug information about the instruction and operands.
|
|
func (i Instruction) String() (output string) {
|
|
switch i.Size {
|
|
case 1:
|
|
output = fmt.Sprintf("~~~ 0x%04X: 0x%02X - %s [%s] {%d}\n", i.Address, i.Opcode, instructionNames[i.opcodeId], addressingNames[i.addressingId], i.Cycles)
|
|
case 2:
|
|
output = fmt.Sprintf("~~~ 0x%04X: 0x%02X - %s 0x%02X [%s] {%d}\n", i.Address, i.Opcode, instructionNames[i.opcodeId], i.Op8, addressingNames[i.addressingId], i.Cycles)
|
|
case 3:
|
|
output = fmt.Sprintf("~~~ 0x%04X: 0x%02X - %s 0x%04X [%s] {%d}\n", i.Address, i.Opcode, instructionNames[i.opcodeId], i.Op16, addressingNames[i.addressingId], i.Cycles)
|
|
}
|
|
|
|
return
|
|
}
|