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Author SHA1 Message Date
omarandlorraine
aa1a47a76f
Fix addition and subtraction (#72) 
* extract decimal logic into separate function

* squash me

* I think we should be doing unsigned arithmetic here

* squash me

* remove unused function

* update the sign checks

* cargo fmt

* get tests to compile again

* get tests passing again

* squash me

* remove pointless conversion from u8 to u8

* cargo fmt

* accumulator is now u8

* add adc test from solid65

* pass the new test

---------

Co-authored-by: Sam M W <you@example.com>
 2023-06-29 12:13:49 +02:00
dependabot[bot]
65817524a2
Bump bitflags from 2.3.2 to 2.3.3 (#82) 
Bumps [bitflags](https://github.com/bitflags/bitflags) from 2.3.2 to 2.3.3.
- [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/2.3.2...2.3.3)

---
updated-dependencies:
- dependency-name: bitflags
  dependency-type: direct:production
  update-type: version-update:semver-patch
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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2023-06-29 10:52:01 +02:00
Matthias Endler
e88c971625
Add assembly example code (#80) 
* Add assembly example code

This should make it easier for beginners to understand
how to test this emulator.

* cleanup

* fix typo
 2023-06-20 10:32:28 +02:00
dependabot[bot]
62d4b73cd5
Bump log from 0.4.17 to 0.4.19 (#78) 
Bumps [log](https://github.com/rust-lang/log) from 0.4.17 to 0.4.19.
- [Release notes](https://github.com/rust-lang/log/releases)
- [Changelog](https://github.com/rust-lang/log/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/log/compare/0.4.17...0.4.19)

---
updated-dependencies:
- dependency-name: log
  dependency-type: direct:production
  update-type: version-update:semver-patch
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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2023-06-19 12:45:50 +02:00
dependabot[bot]
4266599bb2
Bump bitflags from 2.2.1 to 2.3.2 (#79) 
Bumps [bitflags](https://github.com/bitflags/bitflags) from 2.2.1 to 2.3.2.
- [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/2.2.1...2.3.2)

---
updated-dependencies:
- dependency-name: bitflags
  dependency-type: direct:production
  update-type: version-update:semver-minor
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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2023-06-19 11:56:09 +02:00
omarandlorraine
42eb1f8689
Update README.md (#74) 2023-04-26 18:41:44 +02:00
dependabot[bot]
36a9dd19f6
Bump bitflags from 2.1.0 to 2.2.1 (#73) 
Bumps [bitflags](https://github.com/bitflags/bitflags) from 2.1.0 to 2.2.1.
- [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/2.1.0...2.2.1)

---
updated-dependencies:
- dependency-name: bitflags
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2023-04-25 10:45:54 +02:00
Matthias Endler
2effe45a08
Add CI pipeline (#71) 2023-04-20 17:42:18 +02:00
Matthias
56001dc63b Add missing updated lockfile 2023-04-20 14:22:03 +02:00
Matthias
1a3d07861b Bump devel version to 0.5.0 2023-04-20 13:22:13 +02:00
dependabot[bot]
c08e8ac595
Bump bitflags from 2.1.0 to 2.2.0 (#69) 
Bumps [bitflags](https://github.com/bitflags/bitflags) from 2.1.0 to 2.2.0.
- [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/2.1.0...2.2.0)

---
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>
 2023-04-20 10:49:59 +02:00
omarandlorraine
849f891e24
Merge pull request #67 from mre/rts 
Implementation of RTS
 2023-04-16 07:08:25 +01:00
omarandlorraine
6232b3bdbd
Merge pull request #68 from mre/bit 
bugfix for the bit opcode
 2023-04-15 22:05:54 +01:00
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
70e85a2eaf bugfix for the bit opcode 2023-04-15 16:42:05 +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 
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 
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 
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