From 04cb5a192dffa9b0418315ce12133b01b676fdbf Mon Sep 17 00:00:00 2001 From: notaz Date: Mon, 5 Jun 2023 00:41:32 +0300 Subject: [PATCH] carthw: more accurate x-in-1 pirate handling There is no A0 so it should be masked out. Even though the cart could use use LWR as A0, it's not actually connected as seen here: http://gendev.spritesmind.net/forum/viewtopic.php?f=2&p=37995 --- pico/carthw/carthw.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/pico/carthw/carthw.c b/pico/carthw/carthw.c index e00843df..58669f59 100644 --- a/pico/carthw/carthw.c +++ b/pico/carthw/carthw.c @@ -133,7 +133,7 @@ static carthw_state_chunk carthw_Xin1_state[] = { 0, 0, NULL } }; -// TODO: test a0, reads, w16 +// TODO: reads should also work, but then we need to handle open bus static void carthw_Xin1_write8(u32 a, u32 d) { if ((a & 0xffff00) != 0xa13000) { @@ -141,12 +141,23 @@ static void carthw_Xin1_write8(u32 a, u32 d) return; } - carthw_Xin1_do(a, 0x3f, 16); + carthw_Xin1_do(a, 0x3e, 16); +} + +static void carthw_Xin1_write16(u32 a, u32 d) +{ + if ((a & 0xffff00) != 0xa13000) { + PicoWrite16_io(a, d); + return; + } + + carthw_Xin1_write8(a + 1, d); } static void carthw_Xin1_mem_setup(void) { - cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_Xin1_write8, 1); + cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, carthw_Xin1_write8, 1); + cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, carthw_Xin1_write16, 1); } static void carthw_Xin1_reset(void) -- 2.39.5