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Drags myself onto the final page of bus programs.

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233 opcodes now complete; six bus programs to go.
This commit is contained in:
Thomas Harte 2020-09-26 20:57:24 -04:00
parent 4a53b6e538
commit 596e700b60
2 changed files with 36 additions and 4 deletions
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38
Processors/65816/Implementation/65816Storage.cpp
View File

@ -592,8 +592,38 @@ struct CPU::WDC65816::ProcessorStorageConstructor {
}
// 22d. Stack; s, PEA.
static void stack_pea(AccessType, bool, const std::function<void(MicroOp)> &target) {
target(CycleFetchIncrementPC); // AAL
target(CycleFetchIncrementPC); // AAH
target(CyclePush); // AAH
target(CyclePush); // AAL
}
// 22e. Stack; s, PEI.
static void stack_pei(AccessType, bool, const std::function<void(MicroOp)> &target) {
target(CycleFetchIncrementPC); // DO
target(OperationConstructDirect);
target(CycleFetchPC); // IO
target(CycleFetchIncrementData); // AAL
target(CycleFetchData); // AAH
target(CyclePush); // AAH
target(CyclePush); // AAL
}
// 22f. Stack; s, PER.
static void stack_per(AccessType, bool, const std::function<void(MicroOp)> &target) {
target(CycleFetchIncrementPC); // Offset low.
target(CycleFetchIncrementPC); // Offset high.
target(CycleFetchPC); // IO
target(OperationConstructPER);
target(CyclePush); // AAH
target(CyclePush); // AAL
}
// 22g. Stack; s, RTI.
// 22h. Stack; s, RTS.
// 22i. Stack; s, RTL.
@ -676,7 +706,7 @@ ProcessorStorage::ProcessorStorage() {
/* 0x3b TSC i */ op(implied, TSC);
/* 0x3c BIT a, x */ op(absolute_x, BIT);
/* 0x3d AND a, x */ op(absolute_x, AND);
/* 0x3e TLD a, x */
/* 0x3e ROL a, x */ op(absolute_x_rmw, ROL);
/* 0x3f AND al, x */ op(absolute_long_x, AND);
/* 0x40 RTI s */
@ -715,7 +745,7 @@ ProcessorStorage::ProcessorStorage() {
/* 0x60 RTS s */
/* 0x61 ADC (d, x) */ op(direct_indexed_indirect, ADC);
/* 0x62 PER s */
/* 0x62 PER s */ op(stack_per, NOP);
/* 0x63 ADC d, s */
/* 0x64 STZ d */ op(direct, STZ);
/* 0x65 ADC d */ op(direct, ADC);
@ -836,7 +866,7 @@ ProcessorStorage::ProcessorStorage() {
/* 0xd1 CMP (d), y */ op(direct_indirect_indexed, CMP);
/* 0xd2 CMP (d) */ op(direct_indirect, CMP);
/* 0xd3 CMP (d, s), y */
/* 0xd4 PEI s */
/* 0xd4 PEI s */ op(stack_pei, NOP);
/* 0xd5 CMP d, x */ op(direct_x, CMP);
/* 0xd6 DEC d, x */ op(direct_x_rmw, DEC);
/* 0xd7 CMP [d], y */ op(direct_indirect_indexed_long, CMP);
@ -870,7 +900,7 @@ ProcessorStorage::ProcessorStorage() {
/* 0xf1 SBC (d), y */ op(direct_indirect_indexed, SBC);
/* 0xf2 SBC (d) */ op(direct_indirect, SBC);
/* 0xf3 SBC (d, s), y */
/* 0xf4 PEA s */
/* 0xf4 PEA s */ op(stack_pea, NOP);
/* 0xf5 SBC d, x */ op(direct_x, SBC);
/* 0xf6 INC d, x */ op(direct_x_rmw, INC);
/* 0xf7 SBC [d], y */ op(direct_indirect_indexed_long, SBC);

2
Processors/65816/Implementation/65816Storage.hpp
View File

@ -78,6 +78,8 @@ enum MicroOp: uint8_t {
OperationConstructDirectX,
OperationConstructDirectY,
OperationConstructPER,
/// Performs whatever operation goes with this program.
OperationPerform,