From 73759930bf08c063c57d611b65999a245355bfbe Mon Sep 17 00:00:00 2001 From: ClawGrip Date: Mon, 24 Aug 2020 00:57:20 +0200 Subject: sega_beena.cpp: Add note about cartridges pinout (#7130) --- src/mame/drivers/sega_beena.cpp | 62 +++++++++++++++++++++++++++++++++++++++-- 1 file changed, 60 insertions(+), 2 deletions(-) diff --git a/src/mame/drivers/sega_beena.cpp b/src/mame/drivers/sega_beena.cpp index 0d99df52952..5c16d123a24 100644 --- a/src/mame/drivers/sega_beena.cpp +++ b/src/mame/drivers/sega_beena.cpp @@ -15,9 +15,67 @@ Needs the internal BIOS dumped. Component list / PCB diagram - cartridge ROM has 'edinburgh' in the header, maybe a system codename? + Cartridge ROM has 'edinburgh' in the header, maybe a system codename? ROM is also full of OGG files containing the string 'Encoded with Speex speex-1.0.4' - as well as .mid files for music + as well as .mid files for music. + + Cartridges pinout: + + Glob down, PCB cut corner at upper right + Top row of pins A25 on left to A1 on right. + Bottom row of pins B25 on left to B1 on right. + + A1 /CE (tied high with resistor) + A2 D11 + A3 D3 + A4 D10 + A5 D2 + A6 D9 + A7 D1 + A8 D8 + A9 D0 + A10 /OE + A11 N/C + A12 A0 + A13 A1 + A14 A2 + A15 A3 + A16 A4 + A17 A5 + A18 A6 + A19 A7 + A20 A17 + A21 A18 + A22 N/C + A23 VCC + A24 N/C + A25 GND + + B1 N/C + B2 D4 + B3 D12 + B4 D5 + B5 D13 + B6 D6 + B7 D14 + B8 D7 + B9 D15 + B10 A16 + B11 A15 + B12 A14 + B13 A13 + B14 A12 + B15 A11 + B16 A10 + B17 A9 + B18 A8 + B19 A19 + B20 A20 + B21 N/C + B22 A21 + B23 VCC + B24 N/C + B25 GND *******************************************************************************/ -- cgit v1.2.3