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upd7220: command 05 appears to blank the display (nw)

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cracyc 2016-02-15 16:19:49 -06:00
parent 8bf3d16851
commit 51061219be
1 changed files with 8 additions and 1 deletions
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9
src/devices/video/upd7220.cpp
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@ -71,7 +71,8 @@ enum
COMMAND_LPRD, COMMAND_LPRD,
COMMAND_DMAR, COMMAND_DMAR,
COMMAND_DMAW, COMMAND_DMAW,
COMMAND_5A COMMAND_5A,
COMMAND_05
}; };
enum enum
@ -93,6 +94,7 @@ enum
#define UPD7220_COMMAND_CCHAR 0x4b #define UPD7220_COMMAND_CCHAR 0x4b
#define UPD7220_COMMAND_START 0x6b #define UPD7220_COMMAND_START 0x6b
#define UPD7220_COMMAND_BCTRL 0x0c // & 0xfe #define UPD7220_COMMAND_BCTRL 0x0c // & 0xfe
#define UPD7220_COMMAND_05 0x05
#define UPD7220_COMMAND_ZOOM 0x46 #define UPD7220_COMMAND_ZOOM 0x46
#define UPD7220_COMMAND_CURS 0x49 #define UPD7220_COMMAND_CURS 0x49
#define UPD7220_COMMAND_PRAM 0x70 // & 0xf0 #define UPD7220_COMMAND_PRAM 0x70 // & 0xf0
@ -1049,6 +1051,7 @@ int upd7220_device::translate_command(UINT8 data)
case UPD7220_COMMAND_CURD: command = COMMAND_CURD; break; case UPD7220_COMMAND_CURD: command = COMMAND_CURD; break;
case UPD7220_COMMAND_LPRD: command = COMMAND_LPRD; break; case UPD7220_COMMAND_LPRD: command = COMMAND_LPRD; break;
case UPD7220_COMMAND_5A: command = COMMAND_5A; break; case UPD7220_COMMAND_5A: command = COMMAND_5A; break;
case UPD7220_COMMAND_05: command = COMMAND_05; break;
default: default:
switch (data & 0xfe) switch (data & 0xfe)
{ {
@ -1226,6 +1229,10 @@ void upd7220_device::process_fifo()
//LOG(("uPD7220 '%s' DE: 1\n", tag())); //LOG(("uPD7220 '%s' DE: 1\n", tag()));
break; break;
case COMMAND_05:
m_de = 0;
break;
case COMMAND_BCTRL: /* display blanking control */ case COMMAND_BCTRL: /* display blanking control */
m_de = m_cr & 0x01; m_de = m_cr & 0x01;