Sam M W
bd1ab13dc1
point INY instruction at the correct register
2023-04-15 21:47:17 +01:00
Sam M W
f0fc9829db
PLA opcode should update the flags
2023-04-15 21:44:05 +01:00
Sam M W
26a2f51bc6
don't overshoot the stack pointer! (pla and plp)
2023-04-15 21:37:47 +01:00
Sam M W
62424070a1
disable interrupts after BRK instruction
2023-04-15 21:34:07 +01:00
Sam M W
a8d53f926d
implement BRK
2023-04-15 21:17:28 +01:00
Sam M W
1c31a73a2b
correct endianness for program counter push
2023-04-15 21:01:08 +01:00
Sam M W
239992ea6c
first stab at implementing the JSR instruction
2023-04-15 20:58:31 +01:00
Sam M W
8e797b70fa
implement BNE
2023-04-15 16:17:51 +01:00
Sam M W
18164c7abf
implement RTI as well
2023-04-15 15:36:53 +01:00
Sam M W
1b90243738
implementation of RTS
2023-04-15 15:36:43 +01:00
dependabot[bot]
7df9160e32
Bump bitflags from 2.0.2 to 2.1.0 ( #65 )
...
Bumps [bitflags](https://github.com/bitflags/bitflags ) from 2.0.2 to 2.1.0.
- [Release notes](https://github.com/bitflags/bitflags/releases )
- [Changelog](https://github.com/bitflags/bitflags/blob/main/CHANGELOG.md )
- [Commits](https://github.com/bitflags/bitflags/compare/2.0.2...2.1.0 )
---
updated-dependencies:
- dependency-name: bitflags
dependency-type: direct:production
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
2023-04-13 10:58:07 +02:00
omarandlorraine
99ae3d55e0
Merge pull request #63 from mre/memory_trait
...
Tease memory handling apart from the CPU
2023-04-05 05:23:25 +01:00
Sam M W
f031c080a0
bump version
2023-04-04 14:48:13 +01:00
Sam M W
9f75d1a6b5
the get_byte method needs to take mutable reference to self
...
the reson for this is it's possible for external hardware to have some
side effect on a read.
2023-04-03 22:46:46 +01:00
Sam M W
26926a9feb
set_byte method does not need to return old_value
2023-04-03 22:44:02 +01:00
Sam M W
d2043dc6fb
less verbosity, more expliciteness
2023-04-03 21:07:06 +01:00
Sam M W
7222388c5e
get rid of silly xextend function; just use the .into()
2023-04-03 21:00:17 +01:00
Sam M W
3accd8ce40
as clippy suggests, convert from bool to u8/i8
2023-04-03 07:39:30 +01:00
Sam M W
672defd817
remove now dead code
2023-04-03 07:39:30 +01:00
Sam M W
0708a1084c
fix the tests back up
2023-04-03 07:39:18 +01:00
Sam M W
12c901e8aa
generic argument for CPU represents memory
2023-04-03 07:02:32 +01:00
Sam M W
a8dac6e805
extract memory functionality into a trait
2023-04-03 06:59:40 +01:00
Sam M W
f3f15de8cc
remove memory.get_slice
...
real hardware won't have the ability to dive in and grab a slice from
memory
2023-04-03 05:50:13 +01:00
Sam M W
4254c02f55
Remove unit test test_memory_set_bytes
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This is the right thing to do because its pass depends on
zero-initilization. Real memory will not behave this way
2023-04-03 05:50:13 +01:00
Sam M W
131b0f312d
remove get_byte_mut_ref method from Memory
...
This is the right thing to do, because the actual hardware will perform
a read and then perform a write. This could have observable side effects
on a real system
2023-04-03 05:50:06 +01:00
Sam M W
766143d52f
remove is_stack_address; it's never used
2023-04-02 21:21:46 +01:00
omarandlorraine
61b8dfe1f2
add single_step function ( #62 )
...
Co-authored-by: Sam M W <you@example.com>
2023-03-27 00:27:44 +02:00
dependabot[bot]
fdf71425d3
Bump bitflags from 1.3.2 to 2.0.2 ( #60 )
...
* Bump bitflags from 1.3.2 to 2.0.2
Bumps [bitflags](https://github.com/bitflags/bitflags ) from 1.3.2 to 2.0.2.
- [Release notes](https://github.com/bitflags/bitflags/releases )
- [Changelog](https://github.com/bitflags/bitflags/blob/main/CHANGELOG.md )
- [Commits](https://github.com/bitflags/bitflags/compare/1.3.2...2.0.2 )
---
updated-dependencies:
- dependency-name: bitflags
dependency-type: direct:production
update-type: version-update:semver-major
...
Signed-off-by: dependabot[bot] <support@github.com>
* Derive `Copy` and other traits for `Status`
---------
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Matthias <matthias-endler@gmx.net>
2023-03-20 14:58:45 +01:00
Matthias Endler
c3438c14e7
Make code more idiomatic ( #61 )
2023-03-20 14:11:44 +01:00
omarandlorraine
113f95afba
Merge pull request #57 from mre/overflow_panic
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Add or subtract: some values result in panics
2022-10-23 09:46:48 +01:00
Sam M W
c2e77b5f52
also test subtractions
2022-10-23 07:05:08 +01:00
Sam M W
2bcbfa63b5
fix panic
2022-10-23 07:05:04 +01:00
Sam M W
bf543e2fbe
add failing test
2022-10-23 07:04:52 +01:00
Sam M W
11e48c1691
add missing CLI instruction
2022-10-22 12:26:03 +01:00
omarandlorraine
a28ae7e584
Merge pull request #56 from mre/incdec
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Sort out increments and decrements
2022-10-21 09:15:05 +01:00
omarandlorraine
32f925feb2
Merge branch 'master' into incdec
2022-10-21 09:10:18 +01:00
omarandlorraine
8850934023
Merge pull request #53 from mre/addrfix
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Proper wrap-around for address calculations
2022-10-21 09:09:21 +01:00
Sam M W
f821dce70f
do increments in the same way
2022-10-21 06:45:40 +01:00
Sam M W
e4aebb9dfe
cargo fmt
2022-10-21 06:42:27 +01:00
Sam M W
4e057a2a94
remove unused function decrement_memory
2022-10-21 06:40:56 +01:00
Sam M W
1d0fd6aad0
remove unused function dec_x
2022-10-21 06:37:41 +01:00
Sam M W
7500e8816e
cargo clippy --fix
2022-10-21 06:34:42 +01:00
Sam M W
95731752ba
using the associated function decrement
2022-10-21 06:33:51 +01:00
Sam M W
665ee4193d
x and y are now unsigned and there's less casting all over
2022-10-20 09:42:17 +01:00
Sam M W
41b9b19be2
decrement_y_test passes
2022-10-20 09:32:51 +01:00
Sam M W
c406965560
decrement_x_test passes
2022-10-20 09:23:58 +01:00
Sam M W
1972a42adc
some failing tests
2022-10-20 09:04:44 +01:00
Sam M W
894e4304ea
test branch_across_end_of_address_space
2022-10-18 14:55:22 +01:00
Sam M W
d8a9558095
formatting
2022-10-18 13:37:06 +01:00
Sam M W
5290a9d61e
zeropage wraparound test
2022-10-18 13:35:17 +01:00
