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- Fixed case when there is no interface given

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- Changed C6545-1 description from "Commodore' to "MOS Technology"
This commit is contained in:
Zsolt Vasvari 2008-03-12 08:29:33 +00:00
parent d5561a8e75
commit 7ec1537d22
1 changed files with 12 additions and 10 deletions
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22
src/emu/video/mc6845.c
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@ -10,7 +10,7 @@
* Motorola 6845, 6845-1
* Hitachi 46505
* Rockwell 6545, 6545-1 (= Synertek SY6545-1)
* Commodore 6545-1
* MOS Technology 6545-1
(1) as per the document at
http://www.6502.org/users/andre/hwinfo/crtc/diffs.html
@ -218,7 +218,7 @@ WRITE8_DEVICE_HANDLER( mc6845_register_w )
static void recompute_parameters(mc6845_t *mc6845, int postload)
{
if (mc6845->intf)
if (mc6845->intf != NULL)
{
UINT16 hsync_on_pos, hsync_off_pos, vsync_on_pos, vsync_off_pos;
@ -653,17 +653,19 @@ static void *common_start(const device_config *device, int device_type)
mc6845 = auto_malloc(sizeof(*mc6845));
memset(mc6845, 0, sizeof(*mc6845));
mc6845->device_type = device_type;
mc6845->intf = device->static_config;
mc6845->screen = device_list_find_by_tag(device->machine->config->devicelist, VIDEO_SCREEN, mc6845->intf->screen_tag);
mc6845->device_type = device_type;
assert(mc6845->intf->clock > 0);
assert(mc6845->intf->hpixels_per_column > 0);
assert(mc6845->screen != NULL);
/* create the timers */
if (mc6845->intf != NULL)
{
assert(mc6845->intf->clock > 0);
assert(mc6845->intf->hpixels_per_column > 0);
/* get the screen device */
mc6845->screen = device_list_find_by_tag(device->machine->config->devicelist, VIDEO_SCREEN, mc6845->intf->screen_tag);
assert(mc6845->screen != NULL);
/* create the timers */
if (mc6845->intf->on_de_changed != NULL)
mc6845->de_changed_timer = timer_alloc(de_changed_timer_cb, (void *)device);
@ -820,7 +822,7 @@ DEVICE_GET_INFO( c6545_1 )
switch (state)
{
/* --- the following bits of info are returned as NULL-terminated strings --- */
case DEVINFO_STR_NAME: info->s = "Commodore 6545-1"; break;
case DEVINFO_STR_NAME: info->s = "MOS Technology 6545-1"; break;
/* --- the following bits of info are returned as pointers to data or functions --- */
case DEVINFO_FCT_START: info->start = DEVICE_START_NAME(c6545_1); break;