Update color latching for Exidy Targ and Spectar in exidy.cpp

[TimothyShiels]

Updated the color latching for Exidy Targ and Spectar.

Targ - text should be light blue, not white
Spectar - Player's ship & enemy ship that doesn't fire should be yellow. Text is white in Spectar.

For additional information see:
https://www.outerworldarcade.com/targ/targ_video.html

Targ
MAME Current Settings:

BLUE
$6B
0110.1011
1 = 0 [0- Background ]
1 = 0 [4- Character RAM ($C0 - $FF) ]
0 = 1 [3- Character RAM ($80 - $BF) ]
1 = 0 [2- Character RAM ($40 - $7F) ]
0 = 1 [1- Character RAM ($00 - $3F) ]
1 = 0 [5- ? ]
1 = 0 [6- Moving Object 2 (Player's Missile) ]
0 = 1 [7- Moving Object 1 (Player's Ship) ]

GREEN
$EE
1110.1110
0 = 1 [0- Background ]
1 = 0 [4- Character RAM ($C0 - $FF) ]
1 = 0 [3- Character RAM ($80 - $BF) ]
1 = 0 [2- Character RAM ($40 - $7F) ]
0 = 1 [1- Character RAM ($00 - $3F) ]
1 = 0 [5- ? ]
1 = 0 [6- Moving Object 2 (Player's Missile) ]
1 = 0 [7- Moving Object 1 (Player's Ship) ]

RED
$5C
(Subtract $08 = $54 for text to be Light blue and match hardware)
0101.1100
0 = 1 [0- Background ]
0 = 1 [4- Character RAM ($C0 - $FF) ]
1 = 0 [3- Character RAM ($80 - $BF) ]
1 = 0 [2- Character RAM ($40 - $7F) ]
1 = 0 [1- Character RAM ($00 - $3F) ]
0 = 1 [5- ? ]
1 = 0 [6- Moving Object 2 (Player's Missile) ]
0 = 1 [7- Moving Object 1 (Player's Ship) ]

COMBINED
BLUE $01 [0- Background ]
LIGHT BLUE $02 [4- Character RAM ($C0 - $FF) ]
YELLOW $04 [3- Character RAM ($80 - $BF) ]
*WHITE $08 [2- Character RAM ($40 - $7F) ]
RED $10 [1- Character RAM ($00 - $3F) ]
LIGHT BLUE $20 [5- ? ]
WHITE $40 [6- Moving Object 2 (Player's Missile) ]
GREEN $80 [7- Moving Object 1 (Player's Ship) ]

COMBINED FIXED
BLUE $01 [0- Background ]
LIGHT BLUE $02 [4- Character RAM ($C0 - $FF) ]
YELLOW $04 [3- Character RAM ($80 - $BF) ]
*LIGHT BLUE $08 [2- Character RAM ($40 - $7F) ]
RED $10 [1- Character RAM ($00 - $3F) ]
LIGHT BLUE $20 [5- ? ]
WHITE $40 [6- Moving Object 2 (Player's Missile) ]
GREEN $80 [7- Moving Object 1 (Player's Ship) ]

• Fixed

MAME PALETTE CURRENTLY:
$6B (Blue)
$EE (Green)
$5C (Red)

MAME FIXED PALETTE:
$6B (Blue)
$EE (Green)
$54 (Red)

Spectar

MAME Current Settings:

BLUE
$09
(Add $20 = $29 for [?] to be Light Blue and match hardware)
(Add $40 = $69 for Player's Missile to be White and match hardware)
(Subtract $08 = $61 for Enemy's Missile and Letters to be Yellow and match hardware)
0000.1001
1 = 0 [0- Background ]
0 = 1 [4- Character RAM ($C0 - $FF) ]
0 = 1 [3- Character RAM ($80 - $BF) ]
1 = 0 [2- Character RAM ($40 - $7F) ]
0 = 1 [1- Character RAM ($00 - $3F) ]
0 = 1 [5- ? ]
0 = 1 [6- Moving Object 2 (Player's Missile) ]
0 = 1 [7- Moving Object 1 (Player's Ship) ]

GREEN
$EE
1110.1110
0 = 1 [0- Background ]
1 = 0 [4- Character RAM ($C0 - $FF) ]
1 = 0 [3- Character RAM ($80 - $BF) ]
1 = 0 [2- Character RAM ($40 - $7F) ]
0 = 1 [1- Character RAM ($00 - $3F) ]
1 = 0 [5- ? ]
1 = 0 [6- Moving Object 2 (Player's Missile) ]
1 = 0 [7- Moving Object 1 (Player's Ship) ]

RED
$58
(Add $80 = $D8 for player's ship to be Yellow and match hardware)
(Add $02 = $DA for Stars to be Yellow and match hardware)
0101.1000
0 = 1 [0- Background ]
0 = 1 [4- Character RAM ($C0 - $FF) ]
0 = 1 [3- Character RAM ($80 - $BF) ]
1 = 0 [2- Character RAM ($40 - $7F) ]
1 = 0 [1- Character RAM ($00 - $3F) ]
0 = 1 [5- ? ]
1 = 0 [6- Moving Object 2 (Player's Missile) ]
0 = 1 [7- Moving Object 1 (Player's Ship) ]

COMBINED
BLUE $01 [0- Background ]
*GREEN $02 [4- Character RAM ($C0 - $FF) ]
GREEN $04 [3- Character RAM ($80 - $BF) ]
*WHITE $08 [2- Character RAM ($40 - $7F) ]
RED $10 [1- Character RAM ($00 - $3F) ]
*GREEN $20 [5- ? ]
*YELLOW $40 [6- Moving Object 2 (Player's Missile) ]
*GREEN $80 [7- Moving Object 1 (Player's Ship) ]

COMBINED FIXED
BLUE $01 [0- Background ]
*YELLOW $02 [4- Character RAM ($C0 - $FF) ]
GREEN $04 [3- Character RAM ($80 - $BF) ]
*YELLOW $08 [2- Character RAM ($40 - $7F) ]
RED $10 [1- Character RAM ($00 - $3F) ]
*LIGHT BLUE $20 [5- ? ]
*WHITE $40 [6- Moving Object 2 (Player's Missile) ]
*YELLOW $80 [7- Moving Object 1 (Player's Ship) ]

• Fixed

MAME PALETTE CURRENTLY:
$09 (Blue)
$EE (Green)
$58 (Red)

MAME FIXED PALETTE:
$61 (Blue)
$EE (Green)
$DA (Red)