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(MESS) abc806: Implemented flashing, double height, and underlined characters by hooking up the RAD PROM. [Curt Coder]

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This commit is contained in:
Curt Coder 2015-05-19 21:46:29 +03:00
parent 18db099c19
commit 1fab76fe36
2 changed files with 15 additions and 20 deletions
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12
src/mess/drivers/abc80x.c
View File

@ -137,6 +137,16 @@ Notes:
*/
/*
TODO:
- cassette
- abc806 RTC
- abc806 disks except ufd631 won't boot
*/
#include "includes/abc80x.h"
@ -1628,4 +1638,4 @@ DRIVER_INIT_MEMBER(abc806_state,driver_init)
COMP( 1981, abc800c, 0, 0, abc800c, abc800, abc800c_state, driver_init, "Luxor Datorer AB", "ABC 800 C/HR", GAME_SUPPORTS_SAVE )
COMP( 1981, abc800m, abc800c, 0, abc800m, abc800, abc800m_state, driver_init, "Luxor Datorer AB", "ABC 800 M/HR", GAME_SUPPORTS_SAVE )
COMP( 1983, abc802, 0, 0, abc802, abc802, abc802_state, driver_init, "Luxor Datorer AB", "ABC 802", GAME_SUPPORTS_SAVE )
COMP( 1983, abc806, 0, 0, abc806, abc806, abc806_state, driver_init, "Luxor Datorer AB", "ABC 806", GAME_SUPPORTS_SAVE | GAME_IMPERFECT_GRAPHICS )
COMP( 1983, abc806, 0, 0, abc806, abc806, abc806_state, driver_init, "Luxor Datorer AB", "ABC 806", GAME_SUPPORTS_SAVE )

23
src/mess/video/abc806.c
View File

@ -6,17 +6,6 @@
*
****************************************************************************/
/*
TODO:
- hook up RAD prom
- flashing
- double height
- underline
*/
#include "includes/abc80x.h"
@ -227,7 +216,6 @@ MC6845_UPDATE_ROW( abc806_state::abc806_update_row )
{
const pen_t *pen = m_palette->pens();
// UINT8 old_data = 0xff;
int fg_color = 7;
int bg_color = 0;
int underline = 0;
@ -242,21 +230,21 @@ MC6845_UPDATE_ROW( abc806_state::abc806_update_row )
{
UINT8 data = m_char_ram[(ma + column) & 0x7ff];
UINT8 attr = m_attr_ram[(ma + column) & 0x7ff];
UINT16 rad_addr;
UINT8 rad_data;
if ((attr & 0x07) == ((attr >> 3) & 0x07))
{
// special case
switch (attr >> 6)
{
case 0:
// use previously selected attributes
break;
case 1:
// reserved for future use
break;
case 2:
// blank
fg_color = 0;
@ -264,6 +252,7 @@ MC6845_UPDATE_ROW( abc806_state::abc806_update_row )
underline = 0;
flash = 0;
break;
case 3:
// double width
e5 = BIT(attr, 0);
@ -299,10 +288,8 @@ MC6845_UPDATE_ROW( abc806_state::abc806_update_row )
}
else
{
rad_addr = (e6 << 8) | (e5 << 7) | (flash << 6) | (underline << 5) | (m_flshclk << 4) | ra;
UINT16 rad_addr = (e6 << 8) | (e5 << 7) | (flash << 6) | (underline << 4) | (m_flshclk << 5) | (ra & 0x0f);
rad_data = m_rad_prom->base()[rad_addr] & 0x0f;
rad_data = ra; // HACK because the RAD prom is not dumped yet
}
UINT16 chargen_addr = (th << 12) | (data << 4) | rad_data;
@ -328,8 +315,6 @@ MC6845_UPDATE_ROW( abc806_state::abc806_update_row )
{
column++;
}
// old_data = data;
}
}