mirror of https://github.com/mre/mos6502.git
update bitflags
This commit is contained in:
Andrey Kutejko
parent
e46f5b2495
commit
cb2658f3e3
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@ -1,81 +1,74 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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[[package]]
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name = "backtrace"
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[[package]]
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[[package]]
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[[package]]
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dependencies = [
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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@ -85,30 +78,30 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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[[package]]
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[[package]]
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@ -116,110 +109,140 @@ name = "num"
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|
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||||
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||||
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[[package]]
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||||
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|
||||
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|
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[[package]]
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[[package]]
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|
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|
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[[package]]
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
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]
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[[package]]
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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||||
[[package]]
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||||
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|
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|
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|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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||||
name = "same-file"
|
||||
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|
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version = "1.0.5"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
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dependencies = [
|
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|
||||
"winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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@ -228,7 +251,7 @@ version = "0.9.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
|
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"semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
|
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|
||||
"serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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@ -238,52 +261,52 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
|
||||
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|
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|
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|
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|
||||
|
||||
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|
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|
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|
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||||
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[[package]]
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|
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||||
[[package]]
|
||||
name = "skeptic"
|
||||
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version = "0.13.4"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
dependencies = [
|
||||
"bytecount 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
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||||
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||||
"pulldown-cmark 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
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||||
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||||
"walkdir 2.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"walkdir 2.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
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]
|
||||
|
||||
[[package]]
|
||||
name = "syn"
|
||||
version = "0.15.18"
|
||||
version = "1.0.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
||||
"proc-macro2 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"quote 0.6.9 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
"unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
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||||
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|
||||
"unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
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||||
]
|
||||
|
||||
[[package]]
|
||||
|
|
@ -291,28 +314,33 @@ name = "tempdir"
|
|||
version = "0.3.7"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
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|
||||
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||||
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|
||||
|
||||
[[package]]
|
||||
name = "unicode-xid"
|
||||
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|
||||
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|
||||
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|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
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|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
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|
||||
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||||
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||||
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|
||||
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|
||||
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|
||||
|
||||
[[package]]
|
||||
name = "winapi"
|
||||
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|
||||
version = "0.3.8"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
dependencies = [
|
||||
"winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
|
||||
|
|
@ -326,10 +354,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
|
|||
|
||||
[[package]]
|
||||
name = "winapi-util"
|
||||
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|
||||
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|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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|
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[[package]]
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||||
|
|
@ -338,46 +366,49 @@ version = "0.4.0"
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||||
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|
||||
"checksum serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)" = "4b133a43a1ecd55d4086bd5b4dc6c1751c68b1bfbeba7a5040442022c7e7c02e"
|
||||
"checksum serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)" = "2f72eb2a68a7dc3f9a691bfda9305a1c017a6215e5a4545c258500d2099a37c2"
|
||||
"checksum skeptic 0.13.4 (registry+https://github.com/rust-lang/crates.io-index)" = "d6fb8ed853fdc19ce09752d63f3a2e5b5158aeb261520cd75eb618bd60305165"
|
||||
"checksum syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "66850e97125af79138385e9b88339cbcd037e3f28ceab8c5ad98e64f0f1f80bf"
|
||||
"checksum tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "15f2b5fb00ccdf689e0149d1b1b3c03fead81c2b37735d812fa8bddbbf41b6d8"
|
||||
"checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
|
||||
"checksum walkdir 2.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "0ffb549f212c31e19f3667c55a7f515b983a84aef10fd0a4d1f9c125425115f3"
|
||||
"checksum winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "92c1eb33641e276cfa214a0522acad57be5c56b10cb348b3c5117db75f3ac4b0"
|
||||
"checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
|
||||
"checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
|
||||
"checksum walkdir 2.2.9 (registry+https://github.com/rust-lang/crates.io-index)" = "9658c94fa8b940eab2250bd5a457f9c48b748420d71293b165c8cdbe2f55f71e"
|
||||
"checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
|
||||
"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||
"checksum winapi-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "afc5508759c5bf4285e61feb862b6083c8480aec864fa17a81fdec6f69b461ab"
|
||||
"checksum winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7168bab6e1daee33b4557efd0e95d5ca70a03706d39fa5f3fe7a236f584b03c9"
|
||||
"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||
|
|
|
|||
|
|
@ -39,7 +39,7 @@ build = "build.rs"
|
|||
name = "mos6502"
|
||||
|
||||
[dependencies]
|
||||
bitflags = "0.9.1"
|
||||
bitflags = "1"
|
||||
log = "0.4.6"
|
||||
|
||||
[dependencies.num]
|
||||
|
|
|
|||
365
src/cpu.rs
365
src/cpu.rs
|
|
@ -30,9 +30,6 @@ use instruction;
|
|||
use instruction::{DecodedInstr, Instruction, OpInput};
|
||||
use memory::Memory;
|
||||
use registers::{Registers, StackPointer, Status, StatusArgs};
|
||||
use registers::{
|
||||
PS_CARRY, PS_DECIMAL_MODE, PS_DISABLE_INTERRUPTS, PS_NEGATIVE, PS_OVERFLOW, PS_ZERO,
|
||||
};
|
||||
|
||||
#[derive(Clone)]
|
||||
pub struct CPU {
|
||||
|
|
@ -137,7 +134,7 @@ impl CPU {
|
|||
let bit6 = 0 != (0x40 & res);
|
||||
|
||||
self.registers.status.set_with_mask(
|
||||
PS_ZERO | PS_NEGATIVE | PS_OVERFLOW,
|
||||
Status::PS_ZERO | Status::PS_NEGATIVE | Status::PS_OVERFLOW,
|
||||
Status::new(StatusArgs {
|
||||
zero: is_zero,
|
||||
negative: bit7,
|
||||
|
|
@ -169,16 +166,16 @@ impl CPU {
|
|||
}
|
||||
|
||||
(Instruction::CLC, OpInput::UseImplied) => {
|
||||
self.registers.status.and(!PS_CARRY);
|
||||
self.registers.status.and(!Status::PS_CARRY);
|
||||
}
|
||||
(Instruction::CLD, OpInput::UseImplied) => {
|
||||
self.registers.status.and(!PS_DECIMAL_MODE);
|
||||
self.registers.status.and(!Status::PS_DECIMAL_MODE);
|
||||
}
|
||||
(Instruction::CLI, OpInput::UseImplied) => {
|
||||
self.registers.status.and(!PS_DISABLE_INTERRUPTS);
|
||||
self.registers.status.and(!Status::PS_DISABLE_INTERRUPTS);
|
||||
}
|
||||
(Instruction::CLV, OpInput::UseImplied) => {
|
||||
self.registers.status.and(!PS_OVERFLOW);
|
||||
self.registers.status.and(!Status::PS_OVERFLOW);
|
||||
}
|
||||
|
||||
(Instruction::CMP, OpInput::UseImmediate(val)) => {
|
||||
|
|
@ -348,13 +345,13 @@ impl CPU {
|
|||
}
|
||||
|
||||
(Instruction::SEC, OpInput::UseImplied) => {
|
||||
self.registers.status.or(PS_CARRY);
|
||||
self.registers.status.or(Status::PS_CARRY);
|
||||
}
|
||||
(Instruction::SED, OpInput::UseImplied) => {
|
||||
self.registers.status.or(PS_DECIMAL_MODE);
|
||||
self.registers.status.or(Status::PS_DECIMAL_MODE);
|
||||
}
|
||||
(Instruction::SEI, OpInput::UseImplied) => {
|
||||
self.registers.status.or(PS_DISABLE_INTERRUPTS);
|
||||
self.registers.status.or(Status::PS_DISABLE_INTERRUPTS);
|
||||
}
|
||||
|
||||
(Instruction::STA, OpInput::UseAddress(addr)) => {
|
||||
|
|
@ -419,7 +416,7 @@ impl CPU {
|
|||
let is_negative = value < 0;
|
||||
|
||||
status.set_with_mask(
|
||||
PS_ZERO | PS_NEGATIVE,
|
||||
Status::PS_ZERO | Status::PS_NEGATIVE,
|
||||
Status::new(StatusArgs {
|
||||
zero: is_zero,
|
||||
negative: is_negative,
|
||||
|
|
@ -434,7 +431,7 @@ impl CPU {
|
|||
let shifted = (*p_val & !(1 << 7)) << 1;
|
||||
*p_val = shifted;
|
||||
status.set_with_mask(
|
||||
PS_CARRY,
|
||||
Status::PS_CARRY,
|
||||
Status::new(StatusArgs {
|
||||
carry: is_bit_7_set,
|
||||
..StatusArgs::none()
|
||||
|
|
@ -448,7 +445,7 @@ impl CPU {
|
|||
let is_bit_0_set = (*p_val & mask) == mask;
|
||||
*p_val >>= 1;
|
||||
status.set_with_mask(
|
||||
PS_CARRY,
|
||||
Status::PS_CARRY,
|
||||
Status::new(StatusArgs {
|
||||
carry: is_bit_0_set,
|
||||
..StatusArgs::none()
|
||||
|
|
@ -458,13 +455,13 @@ impl CPU {
|
|||
}
|
||||
|
||||
fn rotate_left_with_flags(p_val: &mut u8, status: &mut Status) {
|
||||
let is_carry_set = status.contains(PS_CARRY);
|
||||
let is_carry_set = status.contains(Status::PS_CARRY);
|
||||
let mask = 1 << 7;
|
||||
let is_bit_7_set = (*p_val & mask) == mask;
|
||||
let shifted = (*p_val & !(1 << 7)) << 1;
|
||||
*p_val = shifted + if is_carry_set { 1 } else { 0 };
|
||||
status.set_with_mask(
|
||||
PS_CARRY,
|
||||
Status::PS_CARRY,
|
||||
Status::new(StatusArgs {
|
||||
carry: is_bit_7_set,
|
||||
..StatusArgs::none()
|
||||
|
|
@ -474,13 +471,13 @@ impl CPU {
|
|||
}
|
||||
|
||||
fn rotate_right_with_flags(p_val: &mut u8, status: &mut Status) {
|
||||
let is_carry_set = status.contains(PS_CARRY);
|
||||
let is_carry_set = status.contains(Status::PS_CARRY);
|
||||
let mask = 1;
|
||||
let is_bit_0_set = (*p_val & mask) == mask;
|
||||
let shifted = *p_val >> 1;
|
||||
*p_val = shifted + if is_carry_set { 1 << 7 } else { 0 };
|
||||
status.set_with_mask(
|
||||
PS_CARRY,
|
||||
Status::PS_CARRY,
|
||||
Status::new(StatusArgs {
|
||||
carry: is_bit_0_set,
|
||||
..StatusArgs::none()
|
||||
|
|
@ -519,12 +516,12 @@ impl CPU {
|
|||
}
|
||||
|
||||
fn add_with_carry(&mut self, value: i8) {
|
||||
if self.registers.status.contains(PS_DECIMAL_MODE) {
|
||||
if self.registers.status.contains(Status::PS_DECIMAL_MODE) {
|
||||
// TODO akeeton: Implement binary-coded decimal.
|
||||
debug!("binary-coded decimal not implemented for add_with_carry");
|
||||
} else {
|
||||
let a_before: i8 = self.registers.accumulator;
|
||||
let c_before: i8 = if self.registers.status.contains(PS_CARRY) {
|
||||
let c_before: i8 = if self.registers.status.contains(Status::PS_CARRY) {
|
||||
1
|
||||
} else {
|
||||
0
|
||||
|
|
@ -541,7 +538,7 @@ impl CPU {
|
|||
let did_overflow = (a_before < 0 && value < 0 && a_after >= 0)
|
||||
|| (a_before > 0 && value > 0 && a_after <= 0);
|
||||
|
||||
let mask = PS_CARRY | PS_OVERFLOW;
|
||||
let mask = Status::PS_CARRY | Status::PS_OVERFLOW;
|
||||
|
||||
self.registers.status.set_with_mask(
|
||||
mask,
|
||||
|
|
@ -565,7 +562,7 @@ impl CPU {
|
|||
|
||||
// TODO: Implement binary-coded decimal
|
||||
fn subtract_with_carry(&mut self, value: i8) {
|
||||
if self.registers.status.contains(PS_DECIMAL_MODE) {
|
||||
if self.registers.status.contains(Status::PS_DECIMAL_MODE) {
|
||||
debug!(
|
||||
"binary-coded decimal not implemented for \
|
||||
subtract_with_carry"
|
||||
|
|
@ -574,7 +571,7 @@ impl CPU {
|
|||
// A - M - (1 - C)
|
||||
|
||||
// nc -- 'not carry'
|
||||
let nc: i8 = if self.registers.status.contains(PS_CARRY) {
|
||||
let nc: i8 = if self.registers.status.contains(Status::PS_CARRY) {
|
||||
0
|
||||
} else {
|
||||
1
|
||||
|
|
@ -600,7 +597,7 @@ impl CPU {
|
|||
|
||||
let did_overflow = over || under;
|
||||
|
||||
let mask = PS_CARRY | PS_OVERFLOW;
|
||||
let mask = Status::PS_CARRY | Status::PS_OVERFLOW;
|
||||
|
||||
self.registers.status.set_with_mask(
|
||||
mask,
|
||||
|
|
@ -624,7 +621,7 @@ impl CPU {
|
|||
let is_zero = value_new == 0;
|
||||
|
||||
self.registers.status.set_with_mask(
|
||||
PS_NEGATIVE | PS_ZERO,
|
||||
Status::PS_NEGATIVE | Status::PS_ZERO,
|
||||
Status::new(StatusArgs {
|
||||
negative: is_negative,
|
||||
zero: is_zero,
|
||||
|
|
@ -643,43 +640,43 @@ impl CPU {
|
|||
}
|
||||
|
||||
fn branch_if_carry_clear(&mut self, addr: Address) {
|
||||
if !self.registers.status.contains(PS_CARRY) {
|
||||
if !self.registers.status.contains(Status::PS_CARRY) {
|
||||
self.registers.program_counter = addr;
|
||||
}
|
||||
}
|
||||
|
||||
fn branch_if_carry_set(&mut self, addr: Address) {
|
||||
if self.registers.status.contains(PS_CARRY) {
|
||||
if self.registers.status.contains(Status::PS_CARRY) {
|
||||
self.registers.program_counter = addr;
|
||||
}
|
||||
}
|
||||
|
||||
fn branch_if_equal(&mut self, addr: Address) {
|
||||
if self.registers.status.contains(PS_ZERO) {
|
||||
if self.registers.status.contains(Status::PS_ZERO) {
|
||||
self.registers.program_counter = addr;
|
||||
}
|
||||
}
|
||||
|
||||
fn branch_if_minus(&mut self, addr: Address) {
|
||||
if self.registers.status.contains(PS_NEGATIVE) {
|
||||
if self.registers.status.contains(Status::PS_NEGATIVE) {
|
||||
self.registers.program_counter = addr;
|
||||
}
|
||||
}
|
||||
|
||||
fn branch_if_positive(&mut self, addr: Address) {
|
||||
if !self.registers.status.contains(PS_NEGATIVE) {
|
||||
if !self.registers.status.contains(Status::PS_NEGATIVE) {
|
||||
self.registers.program_counter = addr;
|
||||
}
|
||||
}
|
||||
|
||||
fn branch_if_overflow_clear(&mut self, addr: Address) {
|
||||
if !self.registers.status.contains(PS_OVERFLOW) {
|
||||
if !self.registers.status.contains(Status::PS_OVERFLOW) {
|
||||
self.registers.program_counter = addr;
|
||||
}
|
||||
}
|
||||
|
||||
fn branch_if_overflow_set(&mut self, addr: Address) {
|
||||
if self.registers.status.contains(PS_OVERFLOW) {
|
||||
if self.registers.status.contains(Status::PS_OVERFLOW) {
|
||||
self.registers.program_counter = addr;
|
||||
}
|
||||
}
|
||||
|
|
@ -693,22 +690,22 @@ impl CPU {
|
|||
// The N flag contains most significant bit of the subtraction result.
|
||||
fn compare(&mut self, r: i8, val: u8) {
|
||||
if r as u8 >= val as u8 {
|
||||
self.registers.status.insert(PS_CARRY);
|
||||
self.registers.status.insert(Status::PS_CARRY);
|
||||
} else {
|
||||
self.registers.status.remove(PS_CARRY);
|
||||
self.registers.status.remove(Status::PS_CARRY);
|
||||
}
|
||||
|
||||
if r as i8 == val as i8 {
|
||||
self.registers.status.insert(PS_ZERO);
|
||||
self.registers.status.insert(Status::PS_ZERO);
|
||||
} else {
|
||||
self.registers.status.remove(PS_ZERO);
|
||||
self.registers.status.remove(Status::PS_ZERO);
|
||||
}
|
||||
|
||||
let diff: i8 = r.wrapping_sub(val as i8);
|
||||
if diff < 0 {
|
||||
self.registers.status.insert(PS_NEGATIVE);
|
||||
self.registers.status.insert(Status::PS_NEGATIVE);
|
||||
} else {
|
||||
self.registers.status.remove(PS_NEGATIVE);
|
||||
self.registers.status.remove(Status::PS_NEGATIVE);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -775,71 +772,71 @@ mod tests {
|
|||
|
||||
cpu.add_with_carry(1);
|
||||
assert_eq!(cpu.registers.accumulator, 1);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
cpu.add_with_carry(-1);
|
||||
assert_eq!(cpu.registers.accumulator, 0);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
cpu.add_with_carry(1);
|
||||
assert_eq!(cpu.registers.accumulator, 2);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
let mut cpu = CPU::new();
|
||||
|
||||
cpu.add_with_carry(127);
|
||||
assert_eq!(cpu.registers.accumulator, 127);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
cpu.add_with_carry(-127);
|
||||
assert_eq!(cpu.registers.accumulator, 0);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
cpu.registers.status.remove(PS_CARRY);
|
||||
cpu.registers.status.remove(Status::PS_CARRY);
|
||||
cpu.add_with_carry(-128);
|
||||
assert_eq!(cpu.registers.accumulator, -128);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
cpu.add_with_carry(127);
|
||||
assert_eq!(cpu.registers.accumulator, -1);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
let mut cpu = CPU::new();
|
||||
|
||||
cpu.add_with_carry(127);
|
||||
assert_eq!(cpu.registers.accumulator, 127);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
cpu.add_with_carry(1);
|
||||
assert_eq!(cpu.registers.accumulator, -128);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), true);
|
||||
}
|
||||
|
||||
#[test]
|
||||
|
|
@ -849,26 +846,26 @@ mod tests {
|
|||
cpu.registers.accumulator = 0;
|
||||
cpu.and(-1);
|
||||
assert_eq!(cpu.registers.accumulator, 0);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
|
||||
cpu.registers.accumulator = -1;
|
||||
cpu.and(0);
|
||||
assert_eq!(cpu.registers.accumulator, 0);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
|
||||
cpu.registers.accumulator = -1;
|
||||
cpu.and(0x0f);
|
||||
assert_eq!(cpu.registers.accumulator, 0x0f);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
|
||||
cpu.registers.accumulator = -1;
|
||||
cpu.and(-128);
|
||||
assert_eq!(cpu.registers.accumulator, -128);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), true);
|
||||
}
|
||||
|
||||
#[test]
|
||||
|
|
@ -880,55 +877,55 @@ mod tests {
|
|||
|
||||
cpu.subtract_with_carry(1);
|
||||
assert_eq!(cpu.registers.accumulator, -1);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
cpu.execute_instruction((Instruction::SEC, OpInput::UseImplied));
|
||||
cpu.registers.accumulator = -128;
|
||||
cpu.subtract_with_carry(1);
|
||||
assert_eq!(cpu.registers.accumulator, 127);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), true);
|
||||
|
||||
cpu.execute_instruction((Instruction::SEC, OpInput::UseImplied));
|
||||
cpu.registers.accumulator = 127;
|
||||
cpu.subtract_with_carry(-1);
|
||||
assert_eq!(cpu.registers.accumulator, -128);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), true);
|
||||
|
||||
cpu.execute_instruction((Instruction::CLC, OpInput::UseImplied));
|
||||
cpu.registers.accumulator = -64;
|
||||
cpu.subtract_with_carry(64);
|
||||
assert_eq!(cpu.registers.accumulator, 127);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), true);
|
||||
|
||||
cpu.execute_instruction((Instruction::SEC, OpInput::UseImplied));
|
||||
cpu.registers.accumulator = 0;
|
||||
cpu.subtract_with_carry(-128);
|
||||
assert_eq!(cpu.registers.accumulator, -128);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), true);
|
||||
|
||||
cpu.execute_instruction((Instruction::CLC, OpInput::UseImplied));
|
||||
cpu.registers.accumulator = 0;
|
||||
cpu.subtract_with_carry(127);
|
||||
assert_eq!(cpu.registers.accumulator, -128);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
}
|
||||
|
||||
#[test]
|
||||
|
|
@ -940,25 +937,25 @@ mod tests {
|
|||
|
||||
cpu.decrement_memory(addr);
|
||||
assert_eq!(cpu.memory.get_byte(addr), 4);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
|
||||
cpu.decrement_memory(addr);
|
||||
assert_eq!(cpu.memory.get_byte(addr), 3);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
|
||||
cpu.decrement_memory(addr);
|
||||
cpu.decrement_memory(addr);
|
||||
cpu.decrement_memory(addr);
|
||||
assert_eq!(cpu.memory.get_byte(addr), 0);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
|
||||
cpu.decrement_memory(addr);
|
||||
assert_eq!(cpu.memory.get_byte(addr) as i8, -1);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), true);
|
||||
}
|
||||
|
||||
#[test]
|
||||
|
|
@ -969,34 +966,34 @@ mod tests {
|
|||
cpu.execute_instruction((Instruction::LDA, OpInput::UseImmediate(0)));
|
||||
cpu.execute_instruction((Instruction::LSR, OpInput::UseImplied));
|
||||
assert_eq!(cpu.registers.accumulator, 0);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
cpu.execute_instruction((Instruction::LDA, OpInput::UseImmediate(1)));
|
||||
cpu.execute_instruction((Instruction::LSR, OpInput::UseImplied));
|
||||
assert_eq!(cpu.registers.accumulator, 0);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
cpu.execute_instruction((Instruction::LDA, OpInput::UseImmediate(255)));
|
||||
cpu.execute_instruction((Instruction::LSR, OpInput::UseImplied));
|
||||
assert_eq!(cpu.registers.accumulator, 0x7F);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
cpu.execute_instruction((Instruction::LDA, OpInput::UseImmediate(254)));
|
||||
cpu.execute_instruction((Instruction::LSR, OpInput::UseImplied));
|
||||
assert_eq!(cpu.registers.accumulator, 0x7F);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
}
|
||||
|
||||
#[test]
|
||||
|
|
@ -1005,25 +1002,25 @@ mod tests {
|
|||
|
||||
cpu.dec_x();
|
||||
assert_eq!(cpu.registers.index_x, -1);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
cpu.dec_x();
|
||||
assert_eq!(cpu.registers.index_x, -2);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
cpu.load_x_register(5);
|
||||
cpu.dec_x();
|
||||
assert_eq!(cpu.registers.index_x, 4);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
cpu.dec_x();
|
||||
cpu.dec_x();
|
||||
|
|
@ -1031,17 +1028,17 @@ mod tests {
|
|||
cpu.dec_x();
|
||||
|
||||
assert_eq!(cpu.registers.index_x, 0);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
|
||||
cpu.dec_x();
|
||||
assert_eq!(cpu.registers.index_x, -1);
|
||||
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_CARRY), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_ZERO), false);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_NEGATIVE), true);
|
||||
assert_eq!(cpu.registers.status.contains(Status::PS_OVERFLOW), false);
|
||||
}
|
||||
|
||||
#[test]
|
||||
|
|
@ -1086,7 +1083,7 @@ mod tests {
|
|||
cpu.branch_if_equal(Address(0xABCD));
|
||||
assert_eq!(cpu.registers.program_counter, Address(0));
|
||||
|
||||
cpu.registers.status.or(PS_ZERO);
|
||||
cpu.registers.status.or(Status::PS_ZERO);
|
||||
cpu.branch_if_equal(Address(0xABCD));
|
||||
assert_eq!(cpu.registers.program_counter, Address(0xABCD));
|
||||
}
|
||||
|
|
@ -1105,7 +1102,7 @@ mod tests {
|
|||
{
|
||||
let mut cpu = CPU::new();
|
||||
|
||||
cpu.registers.status.or(PS_NEGATIVE);
|
||||
cpu.registers.status.or(Status::PS_NEGATIVE);
|
||||
let registers_before = cpu.registers;
|
||||
|
||||
cpu.branch_if_minus(Address(0xABCD));
|
||||
|
|
@ -1118,11 +1115,11 @@ mod tests {
|
|||
fn branch_if_positive_test() {
|
||||
let mut cpu = CPU::new();
|
||||
|
||||
cpu.registers.status.insert(PS_NEGATIVE);
|
||||
cpu.registers.status.insert(Status::PS_NEGATIVE);
|
||||
cpu.branch_if_positive(Address(0xABCD));
|
||||
assert_eq!(cpu.registers.program_counter, Address(0));
|
||||
|
||||
cpu.registers.status.remove(PS_NEGATIVE);
|
||||
cpu.registers.status.remove(Status::PS_NEGATIVE);
|
||||
cpu.branch_if_positive(Address(0xABCD));
|
||||
assert_eq!(cpu.registers.program_counter, Address(0xABCD));
|
||||
}
|
||||
|
|
@ -1131,11 +1128,11 @@ mod tests {
|
|||
fn branch_if_overflow_clear_test() {
|
||||
let mut cpu = CPU::new();
|
||||
|
||||
cpu.registers.status.insert(PS_OVERFLOW);
|
||||
cpu.registers.status.insert(Status::PS_OVERFLOW);
|
||||
cpu.branch_if_overflow_clear(Address(0xABCD));
|
||||
assert_eq!(cpu.registers.program_counter, Address(0));
|
||||
|
||||
cpu.registers.status.remove(PS_OVERFLOW);
|
||||
cpu.registers.status.remove(Status::PS_OVERFLOW);
|
||||
cpu.branch_if_overflow_clear(Address(0xABCD));
|
||||
assert_eq!(cpu.registers.program_counter, Address(0xABCD));
|
||||
}
|
||||
|
|
@ -1147,7 +1144,7 @@ mod tests {
|
|||
cpu.branch_if_overflow_set(Address(0xABCD));
|
||||
assert_eq!(cpu.registers.program_counter, Address(0));
|
||||
|
||||
cpu.registers.status.insert(PS_OVERFLOW);
|
||||
cpu.registers.status.insert(Status::PS_OVERFLOW);
|
||||
cpu.branch_if_overflow_set(Address(0xABCD));
|
||||
assert_eq!(cpu.registers.program_counter, Address(0xABCD));
|
||||
}
|
||||
|
|
@ -1162,44 +1159,44 @@ mod tests {
|
|||
cpu.execute_instruction((load_instruction, OpInput::UseImmediate(127)));
|
||||
|
||||
compare(&mut cpu, 127);
|
||||
assert!(cpu.registers.status.contains(PS_ZERO));
|
||||
assert!(cpu.registers.status.contains(PS_CARRY));
|
||||
assert!(!cpu.registers.status.contains(PS_NEGATIVE));
|
||||
assert!(cpu.registers.status.contains(Status::PS_ZERO));
|
||||
assert!(cpu.registers.status.contains(Status::PS_CARRY));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_NEGATIVE));
|
||||
|
||||
cpu.execute_instruction((load_instruction, OpInput::UseImmediate(127)));
|
||||
|
||||
compare(&mut cpu, 1);
|
||||
assert!(!cpu.registers.status.contains(PS_ZERO));
|
||||
assert!(cpu.registers.status.contains(PS_CARRY));
|
||||
assert!(!cpu.registers.status.contains(PS_NEGATIVE));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_ZERO));
|
||||
assert!(cpu.registers.status.contains(Status::PS_CARRY));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_NEGATIVE));
|
||||
|
||||
cpu.execute_instruction((load_instruction, OpInput::UseImmediate(1)));
|
||||
|
||||
compare(&mut cpu, 2);
|
||||
assert!(!cpu.registers.status.contains(PS_ZERO));
|
||||
assert!(!cpu.registers.status.contains(PS_CARRY));
|
||||
assert!(cpu.registers.status.contains(PS_NEGATIVE));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_ZERO));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_CARRY));
|
||||
assert!(cpu.registers.status.contains(Status::PS_NEGATIVE));
|
||||
|
||||
cpu.execute_instruction((load_instruction, OpInput::UseImmediate(20)));
|
||||
|
||||
compare(&mut cpu, -50i8 as u8);
|
||||
assert!(!cpu.registers.status.contains(PS_ZERO));
|
||||
assert!(!cpu.registers.status.contains(PS_CARRY));
|
||||
assert!(!cpu.registers.status.contains(PS_NEGATIVE));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_ZERO));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_CARRY));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_NEGATIVE));
|
||||
|
||||
cpu.execute_instruction((load_instruction, OpInput::UseImmediate(1)));
|
||||
|
||||
compare(&mut cpu, -1i8 as u8);
|
||||
assert!(!cpu.registers.status.contains(PS_ZERO));
|
||||
assert!(!cpu.registers.status.contains(PS_CARRY));
|
||||
assert!(!cpu.registers.status.contains(PS_NEGATIVE));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_ZERO));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_CARRY));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_NEGATIVE));
|
||||
|
||||
cpu.execute_instruction((load_instruction, OpInput::UseImmediate(127)));
|
||||
|
||||
compare(&mut cpu, -128i8 as u8);
|
||||
assert!(!cpu.registers.status.contains(PS_ZERO));
|
||||
assert!(!cpu.registers.status.contains(PS_CARRY));
|
||||
assert!(cpu.registers.status.contains(PS_NEGATIVE));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_ZERO));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_CARRY));
|
||||
assert!(cpu.registers.status.contains(Status::PS_NEGATIVE));
|
||||
}
|
||||
|
||||
#[test]
|
||||
|
|
@ -1246,15 +1243,15 @@ mod tests {
|
|||
assert_eq!(cpu.registers.accumulator, a_after as i8);
|
||||
|
||||
if a_after == 0 {
|
||||
assert!(cpu.registers.status.contains(PS_ZERO));
|
||||
assert!(cpu.registers.status.contains(Status::PS_ZERO));
|
||||
} else {
|
||||
assert!(!cpu.registers.status.contains(PS_ZERO));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_ZERO));
|
||||
}
|
||||
|
||||
if (a_after as i8) < 0 {
|
||||
assert!(cpu.registers.status.contains(PS_NEGATIVE));
|
||||
assert!(cpu.registers.status.contains(Status::PS_NEGATIVE));
|
||||
} else {
|
||||
assert!(!cpu.registers.status.contains(PS_NEGATIVE));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_NEGATIVE));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -1274,15 +1271,15 @@ mod tests {
|
|||
assert_eq!(cpu.registers.accumulator, a_after as i8);
|
||||
|
||||
if a_after == 0 {
|
||||
assert!(cpu.registers.status.contains(PS_ZERO));
|
||||
assert!(cpu.registers.status.contains(Status::PS_ZERO));
|
||||
} else {
|
||||
assert!(!cpu.registers.status.contains(PS_ZERO));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_ZERO));
|
||||
}
|
||||
|
||||
if (a_after as i8) < 0 {
|
||||
assert!(cpu.registers.status.contains(PS_NEGATIVE));
|
||||
assert!(cpu.registers.status.contains(Status::PS_NEGATIVE));
|
||||
} else {
|
||||
assert!(!cpu.registers.status.contains(PS_NEGATIVE));
|
||||
assert!(!cpu.registers.status.contains(Status::PS_NEGATIVE));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -100,28 +100,28 @@ impl Status {
|
|||
let mut out = Status::empty();
|
||||
|
||||
if negative {
|
||||
out |= PS_NEGATIVE
|
||||
out |= Status::PS_NEGATIVE
|
||||
}
|
||||
if overflow {
|
||||
out |= PS_OVERFLOW
|
||||
out |= Status::PS_OVERFLOW
|
||||
}
|
||||
if unused {
|
||||
out |= PS_UNUSED
|
||||
out |= Status::PS_UNUSED
|
||||
}
|
||||
if brk {
|
||||
out |= PS_BRK
|
||||
out |= Status::PS_BRK
|
||||
}
|
||||
if decimal_mode {
|
||||
out |= PS_DECIMAL_MODE
|
||||
out |= Status::PS_DECIMAL_MODE
|
||||
}
|
||||
if disable_interrupts {
|
||||
out |= PS_DISABLE_INTERRUPTS
|
||||
out |= Status::PS_DISABLE_INTERRUPTS
|
||||
}
|
||||
if zero {
|
||||
out |= PS_ZERO
|
||||
out |= Status::PS_ZERO
|
||||
}
|
||||
if carry {
|
||||
out |= PS_CARRY
|
||||
out |= Status::PS_CARRY
|
||||
}
|
||||
|
||||
out
|
||||
|
|
|
|||
Loading…
Reference in New Issue