Burgertime - (bally/midway)
MAME rom set - btimem
There is no ROM test to validate changed ROMS

The game credit counter is stored at 0x1D
Important tile map values

White:
0x00 = blank
0x01 = 0
0x02 = 1
0x03 = 2
0x04 = 3
0x05 = 4
0x06 = 5
0x07 = 6
0x08 = 7
0x09 = 8
0x0A = 9
0x0B = A
0x0C = B
0x0D = C
0x0E = D
0x0F = E
0x10 = F
0x11 = G
0x12 = H
0x13 = I
0x14 = J
0x15 = K
0x16 = L
0x17 = M
0x18 = N
0x19 = O
0x1A = P
0x1B = Q
0x1C = R
0x1D = S
0x1E = T
0x1F = U
0x20 = V
0x21 = W
0x22 = X
0x23 = Y
0x24 = Z

RED:
0x25 = 0
0x26 = 1
0x27 = 2
0x28 = 3
0x29 = 4
0x2A = 5
0x2B = 6
0x2C = 7
0x2D = 8
0x2E = 9
0x2F = A
0x30 = B
0x31 = C
0x32 = D
0x33 = E
0x34 = F
0x35 = G
0x36 = H
0x37 = I
0x38 = J
0x39 = K
0x3A = L
0x3B = M
0x3C = N
0x3D = O
0x3E = P
0x3F = Q
0x40 = R
0x41 = S
0x42 = T
0x43 = U
0x44 = V
0x45 = W
0x46 = X
0x47 = Y
0x48 = Z