Retro/pcem
Watch
1
0
Fork
You've already forked pcem
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Implement cascade interrupt correctly. Fixes crashes in Civilization.

Browse source 
Re-add 0x82 opcode (same as 0x80).
This commit is contained in:
TomW 2014-02-27 22:12:57 +00:00
commit f02d507962
2 changed files with 75 additions and 48 deletions
Download patch file Download diff file Expand all files Collapse all files

16
src/386_ops.h
View file

@ -462,7 +462,7 @@ OpFn ops_286[1024] =
/*60*/ opPUSHA_w, opPOPA_w, opBOUND_w_a16, opARPL_a16, ILLEGAL, ILLEGAL, ILLEGAL, ILLEGAL, opPUSH_imm_w, opIMUL_w_iw_a16,opPUSH_imm_bw, opIMUL_w_ib_a16,opINSB_a16, opINSW_a16, opOUTSB_a16, opOUTSW_a16,
/*70*/ opJO, opJNO, opJB, opJNB, opJE, opJNE, opJBE, opJNBE, opJS, opJNS, opJP, opJNP, opJL, opJNL, opJLE, opJNLE,
/*80*/ op80_a16, op81_w_a16, ILLEGAL, op83_w_a16, opTEST_b_a16, opTEST_w_a16, opXCHG_b_a16, opXCHG_w_a16, opMOV_b_r_a16, opMOV_w_r_a16, opMOV_r_b_a16, opMOV_r_w_a16, opMOV_w_seg_a16,opLEA_w_a16, opMOV_seg_w_a16,opPOPW_a16,
/*80*/ op80_a16, op81_w_a16, op80_a16, op83_w_a16, opTEST_b_a16, opTEST_w_a16, opXCHG_b_a16, opXCHG_w_a16, opMOV_b_r_a16, opMOV_w_r_a16, opMOV_r_b_a16, opMOV_r_w_a16, opMOV_w_seg_a16,opLEA_w_a16, opMOV_seg_w_a16,opPOPW_a16,
/*90*/ opNOP, opXCHG_AX_CX, opXCHG_AX_DX, opXCHG_AX_BX, opXCHG_AX_SP, opXCHG_AX_BP, opXCHG_AX_SI, opXCHG_AX_DI, opCBW, opCWD, opCALL_far_w, opWAIT, opPUSHF, opPOPF_286, opSAHF, opLAHF,
/*a0*/ opMOV_AL_a16, opMOV_AX_a16, opMOV_a16_AL, opMOV_a16_AX, opMOVSB_a16, opMOVSW_a16, opCMPSB_a16, opCMPSW_a16, opTEST_AL, opTEST_AX, opSTOSB_a16, opSTOSW_a16, opLODSB_a16, opLODSW_a16, opSCASB_a16, opSCASW_a16,
/*b0*/ opMOV_AL_imm, opMOV_CL_imm, opMOV_DL_imm, opMOV_BL_imm, opMOV_AH_imm, opMOV_CH_imm, opMOV_DH_imm, opMOV_BH_imm, opMOV_AX_imm, opMOV_CX_imm, opMOV_DX_imm, opMOV_BX_imm, opMOV_SP_imm, opMOV_BP_imm, opMOV_SI_imm, opMOV_DI_imm,
@ -484,7 +484,7 @@ OpFn ops_286[1024] =
/*60*/ opPUSHA_w, opPOPA_w, opBOUND_w_a16, opARPL_a16, ILLEGAL, ILLEGAL, ILLEGAL, ILLEGAL, opPUSH_imm_w, opIMUL_w_iw_a16,opPUSH_imm_bw, opIMUL_w_ib_a16,opINSB_a16, opINSW_a16, opOUTSB_a16, opOUTSW_a16,
/*70*/ opJO, opJNO, opJB, opJNB, opJE, opJNE, opJBE, opJNBE, opJS, opJNS, opJP, opJNP, opJL, opJNL, opJLE, opJNLE,
/*80*/ op80_a16, op81_w_a16, ILLEGAL, op83_w_a16, opTEST_b_a16, opTEST_w_a16, opXCHG_b_a16, opXCHG_w_a16, opMOV_b_r_a16, opMOV_w_r_a16, opMOV_r_b_a16, opMOV_r_w_a16, opMOV_w_seg_a16,opLEA_w_a16, opMOV_seg_w_a16,opPOPW_a16,
/*80*/ op80_a16, op81_w_a16, op80_a16, op83_w_a16, opTEST_b_a16, opTEST_w_a16, opXCHG_b_a16, opXCHG_w_a16, opMOV_b_r_a16, opMOV_w_r_a16, opMOV_r_b_a16, opMOV_r_w_a16, opMOV_w_seg_a16,opLEA_w_a16, opMOV_seg_w_a16,opPOPW_a16,
/*90*/ opNOP, opXCHG_AX_CX, opXCHG_AX_DX, opXCHG_AX_BX, opXCHG_AX_SP, opXCHG_AX_BP, opXCHG_AX_SI, opXCHG_AX_DI, opCBW, opCWD, opCALL_far_w, opWAIT, opPUSHF, opPOPF_286, opSAHF, opLAHF,
/*a0*/ opMOV_AL_a16, opMOV_AX_a16, opMOV_a16_AL, opMOV_a16_AX, opMOVSB_a16, opMOVSW_a16, opCMPSB_a16, opCMPSW_a16, opTEST_AL, opTEST_AX, opSTOSB_a16, opSTOSW_a16, opLODSB_a16, opLODSW_a16, opSCASB_a16, opSCASW_a16,
/*b0*/ opMOV_AL_imm, opMOV_CL_imm, opMOV_DL_imm, opMOV_BL_imm, opMOV_AH_imm, opMOV_CH_imm, opMOV_DH_imm, opMOV_BH_imm, opMOV_AX_imm, opMOV_CX_imm, opMOV_DX_imm, opMOV_BX_imm, opMOV_SP_imm, opMOV_BP_imm, opMOV_SI_imm, opMOV_DI_imm,
@ -506,7 +506,7 @@ OpFn ops_286[1024] =
/*60*/ opPUSHA_w, opPOPA_w, opBOUND_w_a16, opARPL_a16, ILLEGAL, ILLEGAL, ILLEGAL, ILLEGAL, opPUSH_imm_w, opIMUL_w_iw_a16,opPUSH_imm_bw, opIMUL_w_ib_a16,opINSB_a16, opINSW_a16, opOUTSB_a16, opOUTSW_a16,
/*70*/ opJO, opJNO, opJB, opJNB, opJE, opJNE, opJBE, opJNBE, opJS, opJNS, opJP, opJNP, opJL, opJNL, opJLE, opJNLE,
/*80*/ op80_a16, op81_w_a16, ILLEGAL, op83_w_a16, opTEST_b_a16, opTEST_w_a16, opXCHG_b_a16, opXCHG_w_a16, opMOV_b_r_a16, opMOV_w_r_a16, opMOV_r_b_a16, opMOV_r_w_a16, opMOV_w_seg_a16,opLEA_w_a16, opMOV_seg_w_a16,opPOPW_a16,
/*80*/ op80_a16, op81_w_a16, op80_a16, op83_w_a16, opTEST_b_a16, opTEST_w_a16, opXCHG_b_a16, opXCHG_w_a16, opMOV_b_r_a16, opMOV_w_r_a16, opMOV_r_b_a16, opMOV_r_w_a16, opMOV_w_seg_a16,opLEA_w_a16, opMOV_seg_w_a16,opPOPW_a16,
/*90*/ opNOP, opXCHG_AX_CX, opXCHG_AX_DX, opXCHG_AX_BX, opXCHG_AX_SP, opXCHG_AX_BP, opXCHG_AX_SI, opXCHG_AX_DI, opCBW, opCWD, opCALL_far_w, opWAIT, opPUSHF, opPOPF_286, opSAHF, opLAHF,
/*a0*/ opMOV_AL_a16, opMOV_AX_a16, opMOV_a16_AL, opMOV_a16_AX, opMOVSB_a16, opMOVSW_a16, opCMPSB_a16, opCMPSW_a16, opTEST_AL, opTEST_AX, opSTOSB_a16, opSTOSW_a16, opLODSB_a16, opLODSW_a16, opSCASB_a16, opSCASW_a16,
/*b0*/ opMOV_AL_imm, opMOV_CL_imm, opMOV_DL_imm, opMOV_BL_imm, opMOV_AH_imm, opMOV_CH_imm, opMOV_DH_imm, opMOV_BH_imm, opMOV_AX_imm, opMOV_CX_imm, opMOV_DX_imm, opMOV_BX_imm, opMOV_SP_imm, opMOV_BP_imm, opMOV_SI_imm, opMOV_DI_imm,
@ -528,7 +528,7 @@ OpFn ops_286[1024] =
/*60*/ opPUSHA_w, opPOPA_w, opBOUND_w_a16, opARPL_a16, ILLEGAL, ILLEGAL, ILLEGAL, ILLEGAL, opPUSH_imm_w, opIMUL_w_iw_a16,opPUSH_imm_bw, opIMUL_w_ib_a16,opINSB_a16, opINSW_a16, opOUTSB_a16, opOUTSW_a16,
/*70*/ opJO, opJNO, opJB, opJNB, opJE, opJNE, opJBE, opJNBE, opJS, opJNS, opJP, opJNP, opJL, opJNL, opJLE, opJNLE,
/*80*/ op80_a16, op81_w_a16, ILLEGAL, op83_w_a16, opTEST_b_a16, opTEST_w_a16, opXCHG_b_a16, opXCHG_w_a16, opMOV_b_r_a16, opMOV_w_r_a16, opMOV_r_b_a16, opMOV_r_w_a16, opMOV_w_seg_a16,opLEA_w_a16, opMOV_seg_w_a16,opPOPW_a16,
/*80*/ op80_a16, op81_w_a16, op80_a16, op83_w_a16, opTEST_b_a16, opTEST_w_a16, opXCHG_b_a16, opXCHG_w_a16, opMOV_b_r_a16, opMOV_w_r_a16, opMOV_r_b_a16, opMOV_r_w_a16, opMOV_w_seg_a16,opLEA_w_a16, opMOV_seg_w_a16,opPOPW_a16,
/*90*/ opNOP, opXCHG_AX_CX, opXCHG_AX_DX, opXCHG_AX_BX, opXCHG_AX_SP, opXCHG_AX_BP, opXCHG_AX_SI, opXCHG_AX_DI, opCBW, opCWD, opCALL_far_w, opWAIT, opPUSHF, opPOPF_286, opSAHF, opLAHF,
/*a0*/ opMOV_AL_a16, opMOV_AX_a16, opMOV_a16_AL, opMOV_a16_AX, opMOVSB_a16, opMOVSW_a16, opCMPSB_a16, opCMPSW_a16, opTEST_AL, opTEST_AX, opSTOSB_a16, opSTOSW_a16, opLODSB_a16, opLODSW_a16, opSCASB_a16, opSCASW_a16,
/*b0*/ opMOV_AL_imm, opMOV_CL_imm, opMOV_DL_imm, opMOV_BL_imm, opMOV_AH_imm, opMOV_CH_imm, opMOV_DH_imm, opMOV_BH_imm, opMOV_AX_imm, opMOV_CX_imm, opMOV_DX_imm, opMOV_BX_imm, opMOV_SP_imm, opMOV_BP_imm, opMOV_SI_imm, opMOV_DI_imm,
@ -553,7 +553,7 @@ OpFn ops_386[1024] =
/*60*/ opPUSHA_w, opPOPA_w, opBOUND_w_a16, opARPL_a16, op_FS, op_GS, op_66, op_67, opPUSH_imm_w, opIMUL_w_iw_a16,opPUSH_imm_bw, opIMUL_w_ib_a16,opINSB_a16, opINSW_a16, opOUTSB_a16, opOUTSW_a16,
/*70*/ opJO, opJNO, opJB, opJNB, opJE, opJNE, opJBE, opJNBE, opJS, opJNS, opJP, opJNP, opJL, opJNL, opJLE, opJNLE,
/*80*/ op80_a16, op81_w_a16, ILLEGAL, op83_w_a16, opTEST_b_a16, opTEST_w_a16, opXCHG_b_a16, opXCHG_w_a16, opMOV_b_r_a16, opMOV_w_r_a16, opMOV_r_b_a16, opMOV_r_w_a16, opMOV_w_seg_a16,opLEA_w_a16, opMOV_seg_w_a16,opPOPW_a16,
/*80*/ op80_a16, op81_w_a16, op80_a16, op83_w_a16, opTEST_b_a16, opTEST_w_a16, opXCHG_b_a16, opXCHG_w_a16, opMOV_b_r_a16, opMOV_w_r_a16, opMOV_r_b_a16, opMOV_r_w_a16, opMOV_w_seg_a16,opLEA_w_a16, opMOV_seg_w_a16,opPOPW_a16,
/*90*/ opNOP, opXCHG_AX_CX, opXCHG_AX_DX, opXCHG_AX_BX, opXCHG_AX_SP, opXCHG_AX_BP, opXCHG_AX_SI, opXCHG_AX_DI, opCBW, opCWD, opCALL_far_w, opWAIT, opPUSHF, opPOPF, opSAHF, opLAHF,
/*a0*/ opMOV_AL_a16, opMOV_AX_a16, opMOV_a16_AL, opMOV_a16_AX, opMOVSB_a16, opMOVSW_a16, opCMPSB_a16, opCMPSW_a16, opTEST_AL, opTEST_AX, opSTOSB_a16, opSTOSW_a16, opLODSB_a16, opLODSW_a16, opSCASB_a16, opSCASW_a16,
/*b0*/ opMOV_AL_imm, opMOV_CL_imm, opMOV_DL_imm, opMOV_BL_imm, opMOV_AH_imm, opMOV_CH_imm, opMOV_DH_imm, opMOV_BH_imm, opMOV_AX_imm, opMOV_CX_imm, opMOV_DX_imm, opMOV_BX_imm, opMOV_SP_imm, opMOV_BP_imm, opMOV_SI_imm, opMOV_DI_imm,
@ -575,7 +575,7 @@ OpFn ops_386[1024] =
/*60*/ opPUSHA_l, opPOPA_l, opBOUND_l_a16, opARPL_a16, op_FS, op_GS, op_66, op_67, opPUSH_imm_l, opIMUL_l_il_a16,opPUSH_imm_bl, opIMUL_l_ib_a16,opINSB_a16, opINSL_a16, opOUTSB_a16, opOUTSL_a16,
/*70*/ opJO, opJNO, opJB, opJNB, opJE, opJNE, opJBE, opJNBE, opJS, opJNS, opJP, opJNP, opJL, opJNL, opJLE, opJNLE,
/*80*/ op80_a16, op81_l_a16, ILLEGAL, op83_l_a16, opTEST_b_a16, opTEST_l_a16, opXCHG_b_a16, opXCHG_l_a16, opMOV_b_r_a16, opMOV_l_r_a16, opMOV_r_b_a16, opMOV_r_l_a16, opMOV_l_seg_a16,opLEA_l_a16, opMOV_seg_w_a16,opPOPL_a16,
/*80*/ op80_a16, op81_l_a16, op80_a16, op83_l_a16, opTEST_b_a16, opTEST_l_a16, opXCHG_b_a16, opXCHG_l_a16, opMOV_b_r_a16, opMOV_l_r_a16, opMOV_r_b_a16, opMOV_r_l_a16, opMOV_l_seg_a16,opLEA_l_a16, opMOV_seg_w_a16,opPOPL_a16,
/*90*/ opNOP, opXCHG_EAX_ECX, opXCHG_EAX_EDX, opXCHG_EAX_EBX, opXCHG_EAX_ESP, opXCHG_EAX_EBP, opXCHG_EAX_ESI, opXCHG_EAX_EDI, opCWDE, opCDQ, opCALL_far_l, opWAIT, opPUSHFD, opPOPFD, opSAHF, opLAHF,
/*a0*/ opMOV_AL_a16, opMOV_EAX_a16, opMOV_a16_AL, opMOV_a16_EAX, opMOVSB_a16, opMOVSL_a16, opCMPSB_a16, opCMPSL_a16, opTEST_AL, opTEST_EAX, opSTOSB_a16, opSTOSL_a16, opLODSB_a16, opLODSL_a16, opSCASB_a16, opSCASL_a16,
/*b0*/ opMOV_AL_imm, opMOV_CL_imm, opMOV_DL_imm, opMOV_BL_imm, opMOV_AH_imm, opMOV_CH_imm, opMOV_DH_imm, opMOV_BH_imm, opMOV_EAX_imm, opMOV_ECX_imm, opMOV_EDX_imm, opMOV_EBX_imm, opMOV_ESP_imm, opMOV_EBP_imm, opMOV_ESI_imm, opMOV_EDI_imm,
@ -597,7 +597,7 @@ OpFn ops_386[1024] =
/*60*/ opPUSHA_w, opPOPA_w, opBOUND_w_a32, opARPL_a32, op_FS, op_GS, op_66, op_67, opPUSH_imm_w, opIMUL_w_iw_a32,opPUSH_imm_bw, opIMUL_w_ib_a32,opINSB_a32, opINSW_a32, opOUTSB_a32, opOUTSW_a32,
/*70*/ opJO, opJNO, opJB, opJNB, opJE, opJNE, opJBE, opJNBE, opJS, opJNS, opJP, opJNP, opJL, opJNL, opJLE, opJNLE,
/*80*/ op80_a32, op81_w_a32, ILLEGAL, op83_w_a32, opTEST_b_a32, opTEST_w_a32, opXCHG_b_a32, opXCHG_w_a32, opMOV_b_r_a32, opMOV_w_r_a32, opMOV_r_b_a32, opMOV_r_w_a32, opMOV_w_seg_a32,opLEA_w_a32, opMOV_seg_w_a32,opPOPW_a32,
/*80*/ op80_a32, op81_w_a32, op80_a32, op83_w_a32, opTEST_b_a32, opTEST_w_a32, opXCHG_b_a32, opXCHG_w_a32, opMOV_b_r_a32, opMOV_w_r_a32, opMOV_r_b_a32, opMOV_r_w_a32, opMOV_w_seg_a32,opLEA_w_a32, opMOV_seg_w_a32,opPOPW_a32,
/*90*/ opNOP, opXCHG_AX_CX, opXCHG_AX_DX, opXCHG_AX_BX, opXCHG_AX_SP, opXCHG_AX_BP, opXCHG_AX_SI, opXCHG_AX_DI, opCBW, opCWD, opCALL_far_w, opWAIT, opPUSHF, opPOPF, opSAHF, opLAHF,
/*a0*/ opMOV_AL_a32, opMOV_AX_a32, opMOV_a32_AL, opMOV_a32_AX, opMOVSB_a32, opMOVSW_a32, opCMPSB_a32, opCMPSW_a32, opTEST_AL, opTEST_AX, opSTOSB_a32, opSTOSW_a32, opLODSB_a32, opLODSW_a32, opSCASB_a32, opSCASW_a32,
/*b0*/ opMOV_AL_imm, opMOV_CL_imm, opMOV_DL_imm, opMOV_BL_imm, opMOV_AH_imm, opMOV_CH_imm, opMOV_DH_imm, opMOV_BH_imm, opMOV_AX_imm, opMOV_CX_imm, opMOV_DX_imm, opMOV_BX_imm, opMOV_SP_imm, opMOV_BP_imm, opMOV_SI_imm, opMOV_DI_imm,
@ -619,7 +619,7 @@ OpFn ops_386[1024] =
/*60*/ opPUSHA_l, opPOPA_l, opBOUND_l_a32, opARPL_a32, op_FS, op_GS, op_66, op_67, opPUSH_imm_l, opIMUL_l_il_a32,opPUSH_imm_bl, opIMUL_l_ib_a32,opINSB_a32, opINSL_a32, opOUTSB_a32, opOUTSL_a32,
/*70*/ opJO, opJNO, opJB, opJNB, opJE, opJNE, opJBE, opJNBE, opJS, opJNS, opJP, opJNP, opJL, opJNL, opJLE, opJNLE,
/*80*/ op80_a32, op81_l_a32, ILLEGAL, op83_l_a32, opTEST_b_a32, opTEST_l_a32, opXCHG_b_a32, opXCHG_l_a32, opMOV_b_r_a32, opMOV_l_r_a32, opMOV_r_b_a32, opMOV_r_l_a32, opMOV_l_seg_a32,opLEA_l_a32, opMOV_seg_w_a32,opPOPL_a32,
/*80*/ op80_a32, op81_l_a32, op80_a32, op83_l_a32, opTEST_b_a32, opTEST_l_a32, opXCHG_b_a32, opXCHG_l_a32, opMOV_b_r_a32, opMOV_l_r_a32, opMOV_r_b_a32, opMOV_r_l_a32, opMOV_l_seg_a32,opLEA_l_a32, opMOV_seg_w_a32,opPOPL_a32,
/*90*/ opNOP, opXCHG_EAX_ECX, opXCHG_EAX_EDX, opXCHG_EAX_EBX, opXCHG_EAX_ESP, opXCHG_EAX_EBP, opXCHG_EAX_ESI, opXCHG_EAX_EDI, opCWDE, opCDQ, opCALL_far_l, opWAIT, opPUSHFD, opPOPFD, opSAHF, opLAHF,
/*a0*/ opMOV_AL_a32, opMOV_EAX_a32, opMOV_a32_AL, opMOV_a32_EAX, opMOVSB_a32, opMOVSL_a32, opCMPSB_a32, opCMPSL_a32, opTEST_AL, opTEST_EAX, opSTOSB_a32, opSTOSL_a32, opLODSB_a32, opLODSL_a32, opSCASB_a32, opSCASL_a32,
/*b0*/ opMOV_AL_imm, opMOV_CL_imm, opMOV_DL_imm, opMOV_BL_imm, opMOV_AH_imm, opMOV_CH_imm, opMOV_DH_imm, opMOV_BH_imm, opMOV_EAX_imm, opMOV_ECX_imm, opMOV_EDX_imm, opMOV_EBX_imm, opMOV_ESP_imm, opMOV_EBP_imm, opMOV_ESI_imm, opMOV_EDI_imm,

107
src/pic.c
View file

@ -9,8 +9,11 @@ int pic_intpending;
void pic_updatepending()
{
pic_intpending = (((pic.pend&~pic.mask)&~pic.mask2) || ((pic2.pend&~pic2.mask)&~pic2.mask2));
// pclog("pic_intpending = %i %02X %02X %02X\n", pic_intpending, pic.pend, pic.mask, pic.mask2);
pic_intpending = (pic.pend & ~pic.mask) & ~pic.mask2;
if (!((pic.mask | pic.mask2) & (1 << 2)))
pic_intpending |= ((pic2.pend&~pic2.mask)&~pic2.mask2);
/* pclog("pic_intpending = %i %02X %02X %02X %02X\n", pic_intpending, pic.ins, pic.pend, pic.mask, pic.mask2);
pclog(" %02X %02X %02X %02X\n", pic_intpending, pic2.ins, pic2.pend, pic2.mask, pic2.mask2);*/
}
@ -29,6 +32,20 @@ void pic_reset()
pic_intpending = 0;
}
void pic_update_mask(uint8_t *mask, uint8_t ins)
{
int c;
*mask = 0;
for (c = 0; c < 8; c++)
{
if (ins & (1 << c))
{
*mask = 0xff << c;
return;
}
}
}
void pic_write(uint16_t addr, uint8_t val, void *priv)
{
int c;
@ -75,7 +92,9 @@ void pic_write(uint16_t addr, uint8_t val, void *priv)
{
// pclog("Specific EOI - %02X %i\n",pic.ins,1<<(val&7));
pic.ins&=~(1<<(val&7));
pic.mask2&=~(1<<(val&7));
pic_update_mask(&pic.mask2, pic.ins);
if (val == 2 && (pic2.pend&~pic2.mask)&~pic2.mask2)
pic.pend |= (1 << 2);
// pic.pend&=(1<<(val&7));
// if ((val&7)==1) pollkeywaiting();
pic_updatepending();
@ -87,7 +106,11 @@ void pic_write(uint16_t addr, uint8_t val, void *priv)
if (pic.ins&(1<<c))
{
pic.ins&=~(1<<c);
pic.mask2&=~(1<<c);
pic_update_mask(&pic.mask2, pic.ins);
if (c == 2 && (pic2.pend&~pic2.mask)&~pic2.mask2)
pic.pend |= (1 << 2);
// pic.pend&=~(1<<c);
if (c==1 && keywaiting)
{
@ -166,7 +189,8 @@ void pic2_write(uint16_t addr, uint8_t val, void *priv)
if ((val&0xE0)==0x60)
{
pic2.ins&=~(1<<(val&7));
pic2.mask2&=~(1<<(val&7));
pic_update_mask(&pic2.mask2, pic2.ins);
pic_updatepending();
}
else
@ -175,8 +199,9 @@ void pic2_write(uint16_t addr, uint8_t val, void *priv)
{
if (pic2.ins&(1<<c))
{
pic2.ins&=~(1<<c);
pic2.mask2&=~(1<<c);
pic2.ins &= ~(1<<c);
pic_update_mask(&pic2.mask2, pic2.ins);
pic_updatepending();
return;
}
@ -220,6 +245,8 @@ void picint(uint16_t num)
if (num>0xFF)
{
pic2.pend|=(num>>8);
if ((pic2.pend&~pic2.mask)&~pic2.mask2)
pic.pend |= (1 << 2);
}
else
{
@ -254,64 +281,64 @@ void picintc(uint16_t num)
while (!(num & (1 << c))) c++;
//pclog("INTC %04X %i\n", num, c);
pic_current[c]=0;
#if 0
if (num>0xFF) pic2.pend&=~(num>>8);
else
{
pic.pend&=~num;
}
#endif
}
uint8_t picinterrupt()
{
uint8_t temp=pic.pend&~pic.mask;
int c;
for (c=0;c<8;c++)
for (c = 0; c < 2; c++)
{
if (temp&(1<<c))
if (temp & (1 << c))
{
pic.pend&=~(1<<c);
pic.ins|=(1<<c);
pic.mask2|=(1<<c);
pic.pend &= ~(1 << c);
pic.ins |= (1 << c);
pic_update_mask(&pic.mask2, pic.ins);
pic_updatepending();
// pclog("picinterrupt : Taking PIC1 int %i\n", c);
// if (!c) pclog("Taking timer int\n");
// if (c==5) printf("GUS IRQ!\n");
// if (c==1) printf("Keyboard int!\n");
// if (c==0) pic.ins&=~1;
return c+pic.vector;
}
}
/* if (pic.mask2 & 4)
return 0xff;*/
temp=pic2.pend&~pic2.mask;
for (c=0;c<8;c++)
if (temp & (1 << 2))
{
if (temp&(1<<c))
uint8_t temp2 = pic2.pend & ~pic2.mask;
for (c = 0; c < 8; c++)
{
pic2.pend&=~(1<<c);
pic2.ins|=(1<<c);
pic2.mask2|=(1<<c);
if (temp2 & (1 << c))
{
pic2.pend &= ~(1 << c);
pic2.ins |= (1 << c);
pic_update_mask(&pic2.mask2, pic2.ins);
pic.pend &= ~(1 << c);
pic.ins |= (1 << 2); /*Cascade IRQ*/
pic_update_mask(&pic.mask2, pic.ins);
pic_updatepending();
return c+pic2.vector;
}
}
}
for (c = 3; c < 8; c++)
{
if (temp & (1 << c))
{
pic.pend &= ~(1 << c);
pic.ins |= (1 << c);
pic_update_mask(&pic.mask2, pic.ins);
pic_updatepending();
//pclog("Taking PIC2 int %i\n", c);
// if (c==(14-8)) pclog("Taking IRQ 14 %02X\n",c+pic2.vector);
// printf("Taking high IRQ! %i\n",c);
// if (c==1) printf("Keyboard int!\n");
// if (c==0) pic.ins&=~1;
return c+pic2.vector;
return c+pic.vector;
}
}
return 0xFF;
}
void picclear(int num)
{
// pclog("Pic clear %02X\n",num);
pic.pend&=~num;
pic.ins&=~num;
pic_updatepending();
}
void dumppic()
{
pclog("PIC1 : MASK %02X PEND %02X INS %02X VECTOR %02X\n",pic.mask,pic.pend,pic.ins,pic.vector);