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cpu/xa: Implemented add with indexed addressing mode for source. (#12795)

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Used by the tripfevb microcontroller program.
The game no longer causes a fatal error, but hangs instead.
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mamehaze 2024-09-20 18:26:31 +01:00 committed by GitHub
parent fa683e7ac9
commit 79f85a600a
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2 changed files with 3 additions and 3 deletions
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2
src/devices/cpu/xa/xa_ops.cpp
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@ -1123,7 +1123,7 @@ void xa_cpu::aluop_byte_rd_rsoff8(int alu_op, u8 rd, u8 rs, u8 offset8)
}
}
void xa_cpu::add_word_rd_rsoff8(u8 rd, u8 rs, u8 offset8) { fatalerror("ADD.w %s, [%s+#$%02x]", m_regnames16[rd], m_regnames16[rs], offset8);}
void xa_cpu::add_word_rd_rsoff8(u8 rd, u8 rs, u8 offset8) { u16 rdval = gr16(rd); u16 fulloffset = util::sext(offset8, 8); u16 address = get_addr(rs) + fulloffset; u16 val = rdat16(address); u16 result = do_add_16(rdval, val); sr16(rd, result); cy(6); }
void xa_cpu::addc_word_rd_rsoff8(u8 rd, u8 rs, u8 offset8){ fatalerror("ADDC.w %s, [%s+#$%02x]", m_regnames16[rd], m_regnames16[rs], offset8);}
void xa_cpu::sub_word_rd_rsoff8(u8 rd, u8 rs, u8 offset8) { fatalerror("SUB.w %s, [%s+#$%02x]", m_regnames16[rd], m_regnames16[rs], offset8);}
void xa_cpu::subb_word_rd_rsoff8(u8 rd, u8 rs, u8 offset8){ fatalerror("SUBB.w %s, [%s+#$%02x]", m_regnames16[rd], m_regnames16[rs], offset8);}

4
src/mame/igs/igs_m027xa.cpp
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@ -6,8 +6,8 @@
IGS ARM7 (IGS027A) based Mahjong / Gambling platform(s) with XA sub-cpu
These games use the IGS027A processor.
Triple Fever (V105US) (tripfevb) causes MAME to exit with
"Fatal error: ADD.w R0, [R7+#$02]" after paying out tickets.
Triple Fever (V105US) (tripfevb) hangs after paying out tickets, with the MCU
apparently attempting serial communication with something.
*/