Image Background Colors

ROM	Size	Content	Ofs	CRC	SHA1
mpc-3.1m	32	bg_pal	0	6a57eff2	2d1c12dab5915da2ccd466e39436c88be434d634

This ROM defines the colors used for the image backgrounds (not the text background).

; The comments in MAME say:
;
; // the palette is a 32x8 PROM with many colors repeated. The address of
; // the colors to pick is as follows:
; // xbb00: mountains
; // 0xxbb: hills
; // 1xxbb: city

; The bb must be the pixel value (00,01,10,11).
; The xx must be the assigned color set.

; ?? What values of XX does the code set in the hardware?

; Pixel colors by experimenting
;             00    01     10     11
; Hills:      --    20     00     70
; Mountains:  --    C0     00     A0
; City:       --    00     77     70

; Colors used in color sets:
;       R  G  B
; 20    00 97 00     
; 70    00 DE 51     
; 77    FF DE 51     
; C0    00 00 FF     
; A0    00 97 AE     

0000: 00 20 00 70 ; ----      ----     
0004: C0 20 00 70 ;           ----     
0008: 00 20 00 70 ; ----      ----     
000C: A0 20 00 70 ;           ----     
;
0010: 00 00 77 70 ; ---- ----          
0014: C0 00 77 70 ;      ----          
0018: 00 00 77 70 ; ---- ----          
001C: A0 00 77 70 ;      ----