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https://github.com/mre/mos6502.git
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Remove src directory.
This commit is contained in:
Andrew Keeton
parent
87262b0dca
commit
97fa21380f
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// Copyright (C) 2014 The 6502-rs Developers
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// 3. Neither the names of the copyright holders nor the names of any
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// contributors may be used to endorse or promote products derived from this
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// software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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extern crate std;
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// Abbreviations
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//
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// General
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//
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// M | `Memory location`
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//
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// Registers
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//
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// A | accumulator
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// X | general purpose register
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// Y | general purpose register
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// NV-BDIZC | processor status flags -- see ProcessorStatus bitflags
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// SP | stack pointer
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// PC | program counter
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//
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pub bitflags! {
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flags ProcessorStatus: u8 {
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static N = 0b10000000, // Negative -- sometimes called S for "sign"
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static V = 0b01000000, // oVerflow
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static B = 0b00010000, // Brk
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static D = 0b00001000, // Decimal mode active?
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static I = 0b00000100, // Irq disabled?
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static Z = 0b00000010, // Zero
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static C = 0b00000001, // Carry
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}
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}
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#[allow(non_snake_case)]
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pub struct Machine {
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pub A : u8,
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pub X : u8,
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pub Y : u8,
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pub P : ProcessorStatus,
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pub SP : u8,
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pub PC : u16,
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}
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impl Machine {
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pub fn new() -> Machine {
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Machine {
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A: 0,
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X: 0,
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Y: 0,
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SP: 0,
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P: ProcessorStatus::empty(),
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PC: 0
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}
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}
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}
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#[deriving(PartialEq, Eq, PartialOrd, Ord)]
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pub struct StackPointer(u8);
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#[deriving(PartialEq, Eq, PartialOrd, Ord)]
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pub struct Addr(u16);
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#[deriving(PartialEq, Eq, PartialOrd, Ord)]
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pub struct AddrDiff(u16);
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// The idea here is that it doesn't make sense to add two addresses, but it
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// does make sense to add an address and an "address-difference". (If this
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// is too annoying to work with we should let it go.)
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impl Add<AddrDiff, Addr> for Addr {
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fn add(&self, &AddrDiff(rhs): &AddrDiff) -> Addr {
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let &Addr(lhs) = self;
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// We probably don't want to overflow when doing arithmetic in our own
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// code.
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debug_assert!({
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match lhs.checked_add(&rhs) {
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None => false,
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_ => true
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}
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});
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return Addr(lhs + rhs);
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}
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}
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pub static STACK_POINTER_IN_MEMORY_LO: Addr = Addr(0x0100);
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pub static STACK_POINTER_IN_MEMORY_HI: Addr = Addr(0x01FF);
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pub fn stack_pointer_to_addr(StackPointer(x) : StackPointer) -> Addr
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{
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STACK_POINTER_IN_MEMORY_LO + AddrDiff(x as u16)
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}
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// We can probably come up with a better way to represent address ranges
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pub static IRQ_INTERRUPT_VECTOR_LO: Addr = Addr(0xFFFE);
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pub static IRQ_INTERRUPT_VECTOR_HI: Addr = Addr(0xFFFE);
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#[deriving(Show, PartialEq, Eq)]
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pub enum Instruction
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// i/o vars should be listed as follows:
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// NV BDIZC A X Y SP PC M
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//
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// | outputs | inputs
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{ ADC // ADd with Carry................ | NV ...ZC A = A + M + C
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, AND // logical AND (bitwise)......... | N. ...Z. A = A && M
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, ASL // Arithmetic Shift Left......... | N. ...ZC A = M << 1
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, BCC // Branch if Carry Clear......... | .. ..... PC = !C
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, BCS // Branch if Carry Set........... | .. ..... PC = C
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, BEQ // Branch if Equal (to zero?).... | .. ..... PC = Z
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, BIT // BIT test...................... | NV ...Z. = A & M
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, BMI // Branch if Minus............... | .. ..... PC = N
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, BNE // Branch if Not Equal........... | .. ..... PC = !Z
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, BPL // Branch if Positive............ | .. ..... PC = Z
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, BRK // BReaK......................... | .. B.... SP PC =
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, BVC // Branch if oVerflow Clear...... | .. ..... PC = !V
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, BVS // Branch if oVerflow Set........ | .. ..... PC = V
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, CLC // CLear Carry flag.............. | .. ....C = 0
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, CLD // Clear Decimal Mode............ | .. .D... = 0
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, CLI // Clear Interrupt Disable....... | .. ..I.. = 0
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, CLV // Clear oVerflow flag........... | .V ..... = 0
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, CMP // Compare....................... | N. ...ZC = A - M
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, CPX // Compare X register............ | N. ...ZC = X - M
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, CPY // Compare Y register............ | N. ...ZC = Y - M
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, DEC // DECrement memory.............. | N. ...Z. M = M - 1
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, DEX // DEcrement X register.......... | N. ...Z. X = X - 1
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, DEY // DEcrement Y register.......... | N. ...Z. Y = Y - 1
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, EOR // Exclusive OR (bitwise)........ | N. ...Z. A = A ^ M
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, INC // INCrement memory.............. | N. ...Z. M = M + 1
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, INX // INcrement X register.......... | N. ...Z. X = X + 1
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, INY // INcrement Y register.......... | N. ...Z. Y = Y + 1
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, JMP // JuMP.......................... | .. ..... PC =
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, JSR // Jump to SubRoutine............ | .. .....
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, LDA // LoaD Accumulator.............. | .. .....
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, LDX // LoaD X register............... | .. .....
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, LDY // LoaD Y register............... | .. .....
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, LSR // Logical Shift Right........... | .. .....
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, NOP // No OPeration.................. | .. .....
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, ORA // inclusive OR.................. | .. .....
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, PHA // PusH Accumulator.............. | .. .....
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, PHP // PusH Processor status......... | .. .....
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, PLA // PuLl Accumulator.............. | .. .....
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, PLP // PuLl Processor status......... | .. .....
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, ROL // ROtate Left................... | .. .....
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, ROR // ROtate Right.................. | .. .....
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, RTI // ReTurn from Interrupt......... | .. .....
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, RTS // ReTurn from Subroutine........ | .. .....
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, SBC // SuBtract with Carry........... | .. .....
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, SEC // SEt Carry flag................ | .. .....
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, SED // SEt Decimal flag.............. | .. .....
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, SEI // SEt Interrupt disable......... | .. .....
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, STA // STore Accumulator............. | .. .....
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, STX // STore X register.............. | .. .....
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, STY // STore Y register.............. | .. .....
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, TAX // Transfer Accumulator to X..... | .. .....
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, TAY // Transfer Accumulator to Y..... | .. .....
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, TSX // Transfer Stack pointer to X... | .. .....
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, TXA // Transfer X to Accumulator..... | .. .....
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, TXS // Transfer X to Stack pointer... | .. .....
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, TYA // Transfer Y to Accumulator..... | .. .....
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}
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pub enum AddressingMode {
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Immediate,
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Absolute,
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ZeroPage,
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Implied,
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IndirectAbsolute,
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AbsoluteIndexedX,
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AbsoluteIndexedY,
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ZeroPageIndexedX,
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ZeroageIndexedY,
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IndexedIndirect,
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IndirectIndexed,
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Relative,
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Accumulator,
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}
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@ -1,29 +0,0 @@
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// Copyright (C) 2014 The 6502-rs Developers
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// 3. Neither the names of the copyright holders nor the names of any
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// contributors may be used to endorse or promote products derived from this
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// software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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pub mod defs;
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@ -1,39 +0,0 @@
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# Copyright (C) 2014 The 6502-rs Developers
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
|
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||||||
# 1. Redistributions of source code must retain the above copyright
|
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||||||
# notice, this list of conditions and the following disclaimer.
|
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||||||
# 2. Redistributions in binary form must reproduce the above copyright
|
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||||||
# notice, this list of conditions and the following disclaimer in the
|
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# documentation and/or other materials provided with the distribution.
|
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# 3. Neither the names of the copyright holders nor the names of any
|
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# contributors may be used to endorse or promote products derived from this
|
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# software without specific prior written permission.
|
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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[package]
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name = "test_exe"
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version = "0.0.1"
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authors = [ "The 6502-rs Developers" ]
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[[bin]]
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name = "test_exe"
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path = "main.rs"
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[dependencies.machine6502]
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path="../../"
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@ -1,37 +0,0 @@
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// Copyright (C) 2014 The 6502-rs Developers
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
|
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||||||
// modification, are permitted provided that the following conditions
|
|
||||||
// are met:
|
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||||||
// 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.
|
|
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//
|
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
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||||||
// 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
|
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||||||
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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extern crate machine6502;
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use machine6502::defs::Machine;
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fn main() {
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let _q = Machine::new();
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println!("Hello, 6502?");
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}
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Reference in New Issue
Block a user