From 46ea3a071effa34c988918c7f68eceae8e608e3d Mon Sep 17 00:00:00 2001 From: hap Date: Sun, 6 Aug 2023 03:30:21 +0200 Subject: [PATCH] tugboat: add brief pcb notes --- src/mame/misc/tugboat.cpp | 33 ++++++++++++++++++++++++++++++++- 1 file changed, 32 insertions(+), 1 deletion(-) diff --git a/src/mame/misc/tugboat.cpp b/src/mame/misc/tugboat.cpp index 9dc690620ae..636706e1488 100644 --- a/src/mame/misc/tugboat.cpp +++ b/src/mame/misc/tugboat.cpp @@ -13,11 +13,42 @@ TODO: with IRQ timing that causes it to dislike how tugboat does it? - colors might not be entirely accurate Suspect berenstn is using the wrong color PROM. -- convert to use the HD46505 device, it has two? +- convert to use the HD46505 device, it has two. Be careful modifying IRQ timing, otherwise controls in tugboat won't work properly, noticeable on the 2nd level. +-------------------------------------------------------------------------------- + +Bottom board: +What appeared to be a cpu socket was a passthru to the top board. +4 other smaller chip sockets also passed thru to the top. + +HD46505RP +2*HD46821P +AY-3-8912 + +10MHz + +2532 u7 +2532 u8 +2532 u9 + +4716 u67 +2532 u68 +2532 u69 +2532 u70 + +Top board: + +SY6502 +HD46505RP + +4716 u-168 +2532 u-169 +4716 u-170 +4716 u-167 + *******************************************************************************/ #include "emu.h"