GadgetFreak
Active member
The easiest boards for this patch are the later Universal single boards (8106-II) or the bootlegs which seem to be copies of this board as you will just need to replace the 6116 at 2NP (next to the 2 sprite roms) with an NV version such as DS1220, M48Z02, U63716DC etc.
If you have a Universal twin board version it may still be possible, in theory you would need to replace the 2114's at L3 (D0-D3), M3 (D4-D7), N3 (D0-D3) & P3 (D4-D7) with a 6116 NV equivalent as I don't think an NV version of the 2114 exists. You could just replace the ones at N3 & P3 as long as you tie off the upper adress line of the 6116. I don't have access to a twin board version so if you try this please reply with how you get on.
** UPDATE - Forgot to mention this **
To reset the high score table hold down 1 & 2 player start buttons when powering the board up.
As with all my High Score Patches, please post a reply or click thanks if you find this patch works for you.
l1.c4 or lb1a.cpu or lb1b.cpu
l6.k4 or lb6a.cpu or lb6b.cpu
Note: If your board is like mine and has 2764 roms for the code you will find that rom1 is l1.c4+l2.d4 and rom3 is l5.j4+l6.k4 so you will have to add $1000 to the offsets for l6.k4
GadgetFreak2017-04-03 00:46:39
If you have a Universal twin board version it may still be possible, in theory you would need to replace the 2114's at L3 (D0-D3), M3 (D4-D7), N3 (D0-D3) & P3 (D4-D7) with a 6116 NV equivalent as I don't think an NV version of the 2114 exists. You could just replace the ones at N3 & P3 as long as you tie off the upper adress line of the 6116. I don't have access to a twin board version so if you try this please reply with how you get on.
** UPDATE - Forgot to mention this **
To reset the high score table hold down 1 & 2 player start buttons when powering the board up.
As with all my High Score Patches, please post a reply or click thanks if you find this patch works for you.
l1.c4 or lb1a.cpu or lb1b.cpu
Code:
[b]02E0: change these bytes 0A 03 to 20 5F[/b]l6.k4 or lb6a.cpu or lb6b.cpu
Code:
[b]0397: change these bytes 52 5D to 76 5F[/b]
[b]
[/b]
[b]0807: change this byte 10 to 0F[/b]
[b]
[/b]
[b]081F: change this byte 10 to 0F[/b]
[b]
[/b]
[b]These bytes should all be FF before you changes them.[/b]
[b]0F20: CD 0A 03 3A 00 90 E6 60 20 03 CD 54 5F 11 7C 5F[/b]
[b]0F30: 21 60 6F 06 10 1A BE 20 1B 13 23 10 F8 21 70 6F[/b]
[b]0F40: 11 73 60 01 1B 00 ED B0 21 90 6F 11 80 D3 01 6D[/b]
[b]0F50: 00 ED B0 C9 21 7C 5F 11 60 6F 01 10 00 ED B0 21[/b]
[b]0F60: 73 60 11 70 6F 01 1B 00 ED B0 21 80 D3 11 90 6F[/b]
[b]0F70: 01 6D 00 ED B0 C9 CD 52 5D C3 5F 5F 47 41 44 47[/b]
[b]0F80: 45 54 46 52 45 41 4B 32 30 31 37 DE[/b]Note: If your board is like mine and has 2764 roms for the code you will find that rom1 is l1.c4+l2.d4 and rom3 is l5.j4+l6.k4 so you will have to add $1000 to the offsets for l6.k4
GadgetFreak2017-04-03 00:46:39
