tools/emul/shell: fix srong SeekL return value
Also, add warning on attempts to write to ROM.
This commit is contained in:
parent
51bab80a4c
commit
9b4b907236
@ -26,6 +26,7 @@
|
||||
*/
|
||||
|
||||
// in sync with shell.asm
|
||||
#define RAMSTART 0x4000
|
||||
#define STDIO_PORT 0x00
|
||||
#define FS_DATA_PORT 0x01
|
||||
#define FS_SEEKL_PORT 0x02
|
||||
@ -54,7 +55,7 @@ static uint8_t io_read(int unused, uint16_t addr)
|
||||
return 0;
|
||||
}
|
||||
} else if (addr == FS_SEEKL_PORT) {
|
||||
return fsdev_ptr && 0xff;
|
||||
return fsdev_ptr & 0xff;
|
||||
} else if (addr == FS_SEEKH_PORT) {
|
||||
return fsdev_ptr >> 8;
|
||||
} else {
|
||||
@ -92,6 +93,9 @@ static uint8_t mem_read(int unused, uint16_t addr)
|
||||
|
||||
static void mem_write(int unused, uint16_t addr, uint8_t val)
|
||||
{
|
||||
if (addr < RAMSTART) {
|
||||
fprintf(stderr, "Writing to ROM (%d)!\n", addr);
|
||||
}
|
||||
mem[addr] = val;
|
||||
}
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user