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[/] [t48/] [tags/] [rel_1_1/] [sw/] [i8039emu/] [memory.c] - Diff between revs 49 and 51

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Rev 49	Rev 51
Line 1...	Line 1...
`/*`	`/*`
`* $Id: memory.c,v 1.1.1.1 2004-04-09 19:20:54 arniml Exp $`	`* $Id: memory.c,v 1.2 2004-04-14 20:50:51 arniml Exp $`
`*`	`*`
`* Copyright (c) 2004, Arnim Laeuger (arniml@opencores.org)`	`* Copyright (c) 2004, Arnim Laeuger (arniml@opencores.org)`
`*`	`*`
`* All rights reserved`	`* All rights reserved`
`*`	`*`
Line 24...	Line 24...

`#include <stdio.h>`	`#include <stdio.h>`
`#include <string.h>`	`#include <string.h>`

`#include "memory.h"`	`#include "memory.h"`
	`#include "i8039.h"`


`static UINT8 code_mem[4096];`	`static UINT8 code_mem[4096];`


	`static UINT8 port1 = 0xff, port2 = 0xff;`


`UINT8 program_read_byte_8(UINT16 address)`	`UINT8 program_read_byte_8(UINT16 address)`
`{`	`{`
`return(0);`	`return(code_mem[address]);`
`}`	`}`

`UINT8 cpu_readop(UINT16 address)`	`UINT8 cpu_readop(UINT16 address)`
`{`	`{`
`return(code_mem[address]);`	`return(code_mem[address]);`
Line 45...	Line 48...
`UINT8 cpu_readop_arg(UINT16 address)`	`UINT8 cpu_readop_arg(UINT16 address)`
`{`	`{`
`return(code_mem[address]);`	`return(code_mem[address]);`
`}`	`}`


`UINT8 io_read_byte_8(UINT8 address)`	`UINT8 io_read_byte_8(UINT8 address)`
`{`	`{`
`return(0);`	`UINT8 data;`

	`switch (0x100 \| address) {`
	`case I8039_p1:`
	`data = port1;`
	`break;`

	`case I8039_p2:`
	`data = port2;`
	`break;`

	`case I8039_t0:`
	`/* connect T0 to P1[0] */`
	`data = port1 & 0x01;`
	`break;`

	`case I8039_t1:`
	`/* connect T1 to P1[1] */`
	`data = (port1 & 0x02) >> 1;`
	`break;`

	`default:`
	`data = 0;`
	`break;`
	`}`


	`return(data);`
`}`	`}`


`void io_write_byte_8(UINT8 address, UINT8 data)`	`void io_write_byte_8(UINT8 address, UINT8 data)`
`{`	`{`
	`switch (0x100 \| address) {`
	`case I8039_p1:`
	`port1 = data;`
	`break;`

	`case I8039_p2:`
	`port2 = data;`
	`break;`

	`default:`
	`break;`
	`}`
`}`	`}`


`int read_hex_file(char *filename)`	`int read_hex_file(char *filename)`
`{`	`{`

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[/] [t48/] [tags/] [rel_1_1/] [sw/] [i8039emu/] [memory.c] - Diff between revs 49 and 51