1
0
mirror of https://github.com/pevans/erc-c.git synced 2024-12-21 08:30:55 +00:00

Use C-style to denote documentation

This commit is contained in:
Peter Evans 2017-12-05 18:40:40 -06:00
parent 8454d1a6c9
commit 631451afe5

View File

@ -35,15 +35,19 @@
void mos6502_handle_##inst (mos6502 *cpu, vm_8bit oper)
typedef struct {
// Our memory.
/*
* Our memory.
*/
vm_segment *memory;
// This contains the last _effective_ address we've resolved in one
// of our address modes. In absolute mode, this would be the literal
// operand we read from memory; in indirect mode, this will be the
// address we _find_ after dereferencing the operand we read from
// memory. Another way of thinking of this is, this address is where
// we found the value we care about.
/*
* This contains the last _effective_ address we've resolved in one
* of our address modes. In absolute mode, this would be the literal
* operand we read from memory; in indirect mode, this will be the
* address we _find_ after dereferencing the operand we read from
* memory. Another way of thinking of this is, this address is where
* we found the value we care about.
*/
vm_16bit last_addr;
/*
@ -61,27 +65,37 @@ typedef struct {
*/
int cycles;
// Our program counter register; this is what we'll use to determine
// where we're "at" in memory while executing opcodes. We use a
// 16-bit register because our memory is 64k large.
/*
* Our program counter register; this is what we'll use to determine
* where we're "at" in memory while executing opcodes. We use a
* 16-bit register because our memory is 64k large.
*/
vm_16bit PC;
// This is the accumulator register. It's used in most arithmetic
// operations, and anything like that which you need to do will end
// up storing the value here.
/*
* This is the accumulator register. It's used in most arithmetic
* operations, and anything like that which you need to do will end
* up storing the value here.
*/
vm_8bit A;
// The X and Y registers are our index registers. They're provided
// to aid looping over tables, but they can also be used for other
// purposes.
/*
* The X and Y registers are our index registers. They're provided
* to aid looping over tables, but they can also be used for other
* purposes.
*/
vm_8bit X, Y;
// The P register is our status flag register. (I presume 'P' means
// 'predicate'.) Each bit stands for some kind of status.
/*
* The P register is our status flag register. (I presume 'P' means
* 'predicate'.) Each bit stands for some kind of status.
*/
vm_8bit P;
// The S register is our stack counter register. It indicates how
// far into the stack we've gone.
/*
* The S register is our stack counter register. It indicates how
* far into the stack we've gone.
*/
vm_8bit S;
} mos6502;