diff options
author | 2012-10-07 20:12:10 +0000 | |
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committer | 2012-10-07 20:12:10 +0000 | |
commit | e5d37a459596eaed3422f0741037cb7e4c116fd2 (patch) | |
tree | 66ff43089750de8bd72330362292979d56befd77 /src/mess/drivers/a2600.c | |
parent | f4252feeeabb1281dbc7d0e143f35c30855f13a1 (diff) |
(MESS) a2600.c: Added proper support for games using a 4in1 mapper. (Wilbert Pol)
Diffstat (limited to 'src/mess/drivers/a2600.c')
-rw-r--r-- | src/mess/drivers/a2600.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/mess/drivers/a2600.c b/src/mess/drivers/a2600.c index db8bed6297a..36e1d4a266b 100644 --- a/src/mess/drivers/a2600.c +++ b/src/mess/drivers/a2600.c @@ -198,7 +198,8 @@ enum modeDPC, mode32in1, modeJVP, - mode8in1 + mode8in1, + mode4in1 }; static const UINT16 supported_screen_heights[4] = { 262, 312, 328, 342 }; @@ -609,7 +610,8 @@ static DEVICE_IMAGE_LOAD( a2600_cart ) { static const struct { const char *mapper_name; int mapper_type; } mapper_types[] = { - { "8in1", mode8in1 }, + { "4in1", mode4in1 }, + { "8in1", mode8in1 }, }; for (int i = 0; i < ARRAY_LENGTH(mapper_types) && state->m_banking_mode == 0xff; i++) @@ -1906,6 +1908,11 @@ void a2600_state::machine_reset() install_banks(1, 0x0000); break; + case mode4in1: + m_current_reset_bank_counter = m_current_reset_bank_counter & 0x03; + install_banks(1, m_current_reset_bank_counter * 0x1000); + break; + case mode8in1: m_current_reset_bank_counter = m_current_reset_bank_counter & 0x07; if ( m_current_reset_bank_counter == 7 ) |