6502/mre-mos6502
1
0
Fork 0
mirror of https://github.com/mre/mos6502.git synced 2025-02-19 16:32:10 +00:00
Code Issues Projects Releases Wiki Activity

delete now useless sourcefile src/address.rs

Browse Source
This commit is contained in:
Sam M W 2022-10-18 10:09:24 +01:00
parent 8c6591f6a4
commit cd83ae7b9c
1 changed files with 0 additions and 91 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

91
src/address.rs
View File

@ -1,91 +0,0 @@
// Copyright (C) 2014 The 6502-rs Developers
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. Neither the names of the copyright holders nor the names of any
// contributors may be used to endorse or promote products derived from this
// software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
use core::ops::Add;
// The idea here is that it doesn't make sense to add two addresses, but it
// does make sense to add an address and an "address-difference". (If this
// is too annoying to work with we should let it go.)
#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug)]
pub struct AddressDiff(pub i32);
#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug)]
pub struct Address(pub u16);
impl Add<AddressDiff> for Address {
type Output = Address;
fn add(self, AddressDiff(rhs): AddressDiff) -> Address {
let Address(lhs) = self;
Address(((i32::from(lhs)) + rhs) as u16)
}
}
impl Add for AddressDiff {
type Output = AddressDiff;
fn add(self, AddressDiff(rhs): AddressDiff) -> AddressDiff {
let AddressDiff(lhs) = self;
AddressDiff(lhs + rhs)
}
}
#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord)]
pub struct CheckedAddressDiff(u16);
impl Add<CheckedAddressDiff> for Address {
type Output = Address;
fn add(self, CheckedAddressDiff(rhs): CheckedAddressDiff) -> Address {
let Address(lhs) = self;
// We probably don't want to overflow when doing arithmetic in our own
// code.
debug_assert!(lhs.checked_add(rhs).is_some());
Address(lhs + rhs)
}
}
impl Address {
pub fn to_u16(self) -> u16 {
self.0
}
pub fn to_usize(self) -> usize {
self.to_u16() as usize
}
pub fn get_page_number(self) -> u8 {
(self.to_u16() & 0xff00 >> 8) as u8
}
pub fn get_offset(self) -> u8 {
(self.to_u16() & 0x00ff) as u8
}
}