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[/] [or1k/] [tags/] [rel_26/] [or1200/] [rtl/] [verilog/] [or1200_du.v] - Diff between revs 660 and 737

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Rev 660 Rev 737
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//////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
//
//
// CVS Revision History
// CVS Revision History
//
//
// $Log: not supported by cvs2svn $
// $Log: not supported by cvs2svn $
 
// Revision 1.5  2002/02/11 04:33:17  lampret
 
// Speed optimizations (removed duplicate _cyc_ and _stb_). Fixed D/IMMU cache-inhibit attr.
 
//
// Revision 1.4  2002/01/28 01:16:00  lampret
// Revision 1.4  2002/01/28 01:16:00  lampret
// Changed 'void' nop-ops instead of insn[0] to use insn[16]. Debug unit stalls the tick timer. Prepared new flag generation for add and and insns. Blocked DC/IC while they are turned off. Fixed I/D MMU SPRs layout except WAYs. TODO: smart IC invalidate, l.j 2 and TLB ways.
// Changed 'void' nop-ops instead of insn[0] to use insn[16]. Debug unit stalls the tick timer. Prepared new flag generation for add and and insns. Blocked DC/IC while they are turned off. Fixed I/D MMU SPRs layout except WAYs. TODO: smart IC invalidate, l.j 2 and TLB ways.
//
//
// Revision 1.3  2002/01/18 07:56:00  lampret
// Revision 1.3  2002/01/18 07:56:00  lampret
// No more low/high priority interrupts (PICPR removed). Added tick timer exception. Added exception prefix (SR[EPH]). Fixed single-step bug whenreading NPC.
// No more low/high priority interrupts (PICPR removed). Added tick timer exception. Added exception prefix (SR[EPH]). Fixed single-step bug whenreading NPC.
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//
//
// Some connections go directly from the CPU through DU to Debug I/F
// Some connections go directly from the CPU through DU to Debug I/F
//
//
 
`ifdef OR1200_DU_STATUS_UNIMPLEMENTED
 
assign dbg_lss_o = 4'b0000;
 
assign dbg_is_o = 2'b00;
 
`else
assign dbg_lss_o = dcpu_cycstb_i ? {dcpu_we_i, 3'b000} : 4'b0000;
assign dbg_lss_o = dcpu_cycstb_i ? {dcpu_we_i, 3'b000} : 4'b0000;
assign dbg_is_o = {1'b0, icpu_cycstb_i};
assign dbg_is_o = {1'b0, icpu_cycstb_i};
 
`endif
assign dbg_wp_o = 11'b000_0000_0000;
assign dbg_wp_o = 11'b000_0000_0000;
assign dbg_dat_o = du_dat_i;
assign dbg_dat_o = du_dat_i;
 
 
//
//
// Some connections go directly from Debug I/F through DU to the CPU
// Some connections go directly from Debug I/F through DU to the CPU

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