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ALU_top.bdf
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ALU_top.bdf
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@ -4,9 +4,9 @@ editor if you plan to continue editing the block that represents it in
|
|||
the Block Editor! File corruption is VERY likely to occur.
|
||||
*/
|
||||
/*
|
||||
Copyright (C) 2019 Intel Corporation. All rights reserved.
|
||||
Copyright (C) 2018 Intel Corporation. All rights reserved.
|
||||
Your use of Intel Corporation's design tools, logic functions
|
||||
and other software and tools, and any partner logic
|
||||
and other software and tools, and its AMPP partner logic
|
||||
functions, and any output files from any of the foregoing
|
||||
(including device programming or simulation files), and any
|
||||
associated documentation or information are expressly subject
|
||||
|
@ -16,8 +16,7 @@ the Intel FPGA IP License Agreement, or other applicable license
|
|||
agreement, including, without limitation, that your use is for
|
||||
the sole purpose of programming logic devices manufactured by
|
||||
Intel and sold by Intel or its authorized distributors. Please
|
||||
refer to the applicable agreement for further details, at
|
||||
https://fpgasoftware.intel.com/eula.
|
||||
refer to the applicable agreement for further details.
|
||||
*/
|
||||
(header "graphic" (version "1.4"))
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@ -148,22 +147,6 @@ https://fpgasoftware.intel.com/eula.
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@ -599,8 +532,46 @@ https://fpgasoftware.intel.com/eula.
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@ -41,7 +41,7 @@ set_global_assignment -name DEVICE AUTO
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set_global_assignment -name TOP_LEVEL_ENTITY CPUProject
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set_global_assignment -name ORIGINAL_QUARTUS_VERSION 18.1.0
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set_global_assignment -name PROJECT_CREATION_TIME_DATE "12:38:11 MAY 20, 2020"
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set_global_assignment -name LAST_QUARTUS_VERSION "19.1.0 Lite Edition"
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set_global_assignment -name LAST_QUARTUS_VERSION "18.1.0 Standard Edition"
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set_global_assignment -name PROJECT_OUTPUT_DIRECTORY output_files
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set_global_assignment -name TIMING_ANALYZER_MULTICORNER_ANALYSIS ON
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set_global_assignment -name NUM_PARALLEL_PROCESSORS ALL
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|
|
|
@ -4,9 +4,9 @@ editor if you plan to continue editing the block that represents it in
|
|||
the Block Editor! File corruption is VERY likely to occur.
|
||||
*/
|
||||
/*
|
||||
Copyright (C) 2019 Intel Corporation. All rights reserved.
|
||||
Copyright (C) 2018 Intel Corporation. All rights reserved.
|
||||
Your use of Intel Corporation's design tools, logic functions
|
||||
and other software and tools, and any partner logic
|
||||
and other software and tools, and its AMPP partner logic
|
||||
functions, and any output files from any of the foregoing
|
||||
(including device programming or simulation files), and any
|
||||
associated documentation or information are expressly subject
|
||||
|
@ -16,8 +16,7 @@ the Intel FPGA IP License Agreement, or other applicable license
|
|||
agreement, including, without limitation, that your use is for
|
||||
the sole purpose of programming logic devices manufactured by
|
||||
Intel and sold by Intel or its authorized distributors. Please
|
||||
refer to the applicable agreement for further details, at
|
||||
https://fpgasoftware.intel.com/eula.
|
||||
refer to the applicable agreement for further details.
|
||||
*/
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(header "symbol" (version "1.1"))
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(symbol
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48
DECODE.v
48
DECODE.v
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@ -41,7 +41,8 @@ module DECODE
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//Different opcodes (refer to documentation):
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wire LDA = msb & ~ls;
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wire STA = msb & ls;
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wire JMP = ~msb & ~op[5] & ~op[4] & ~op[3] & ~op[2];
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wire JMP = ~msb & ~op[5] & ~op[4] & ~op[3] & ~op[2] & ~op[1] & ~op[0];
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wire JMA = ~msb & ~op[5] & ~op[4] & ~op[3] & ~op[2] & ~op[1] & op[0];
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wire JCX = ~msb & ((~op[5] & ~op[4] & ~op[3] & op[2]) | (~op[5] & ~op[4] & op[3] & ~op[2]));
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wire MUL = ~msb & ~op[5] & op[4] & op[3] & op[2] & ~op[1] & ~op[0];
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wire MLA = ~msb & ~op[5] & op[4] & op[3] & op[2] & ~op[1] & op[0];
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wire POP = ~msb & op[5] & ~op[4] & op[3] & ~op[2] & ~op[1] & op[0];
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wire LDR = ~msb & op[5] & ~op[4] & op[3] & ~op[2] & op[1] & ~op[0];
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wire STR = ~msb & op[5] & ~op[4] & op[3] & ~op[2] & op[1] & op[0];
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wire CLL = ~msb & op[5] & ~op[4] & ~op[3] & op[2] & op[1] & ~op[0];
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wire RTN = ~msb & op[5] & ~op[4] & ~op[3] & op[2] & op[1] & op[0];
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wire NOP = ~msb & op[5] & op[4] & op[3] & op[2] & op[1] & ~op[0];
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wire STP = ~msb & op[5] & op[4] & op[3] & op[2] & op[1] & op[0];
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assign R0_count = EXEC1 & (~(JMP | (JCX & COND_result) | STP));
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assign R0_en = (EXEC1 & (~(STA | NOP | STP | LDA | PSH | LDR) & ~Rd[2] & ~Rd[1] & ~Rd[0] | JMP | JCX & COND_result)) | (EXEC2 & LDA & ~Rls[2] & ~Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) & ~Rd[2] & ~Rd[1] & ~Rd[0]);
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assign R1_en = (EXEC1 & ~(JMP | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR) & ~Rd[2] & ~Rd[1] & Rd[0]) | (EXEC2 & LDA & ~Rls[2] & ~Rls[1] & Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) & ~Rd[2] & ~Rd[1] & Rd[0]);
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assign R2_en = (EXEC1 & ~(JMP | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR) & ~Rd[2] & Rd[1] & ~Rd[0]) | (EXEC2 & LDA & ~Rls[2] & Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) & ~Rd[2] & Rd[1] & ~Rd[0]);
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assign R3_en = (EXEC1 & ~(JMP | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR) & ~Rd[2] & Rd[1] & Rd[0]) | (EXEC2 & LDA & ~Rls[2] & Rls[1] & Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) & ~Rd[2] & Rd[1] & Rd[0]);
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assign R4_en = (EXEC1 & ~(JMP | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR) & Rd[2] & ~Rd[1] & ~Rd[0]) | (EXEC2 & LDA & Rls[2] & ~Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) & Rd[2] & ~Rd[1] & ~Rd[0]);
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assign R5_en = (EXEC1 & ~(JMP | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR) & Rd[2] & ~Rd[1] & Rd[0]) | (EXEC2 & LDA & Rls[2] & ~Rls[1] & Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) & Rd[2] & ~Rd[1] & Rd[0]);
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||||
assign R6_en = (EXEC1 & ~(JMP | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR) & Rd[2] & Rd[1] & ~Rd[0]) | (EXEC2 & LDA & Rls[2] & Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) & Rd[2] & Rd[1] & ~Rd[0]);
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assign R7_en = (EXEC1 & ~(JMP | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR) & Rd[2] & Rd[1] & Rd[0]) | (EXEC2 & LDA & Rls[2] & Rls[1] & Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) & Rd[2] & Rd[1] & Rd[0]);
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assign s1[2] = (~(JMP | STA | LDA | NOP | STP | POP) & Rs1[2]) | (STA & Rls[2]);
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||||
assign s1[1] = (~(JMP | STA | LDA | NOP | STP | POP) & Rs1[1]) | (STA & Rls[1]);
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||||
assign s1[0] = (~(JMP | STA | LDA | NOP | STP | POP) & Rs1[0]) | (STA & Rls[0]);
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assign s2[2] = (~(JMP | STA | LDA | NOP | STP | POP | PSH | LDR | STR) & Rs2[2]);
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assign s2[1] = (~(JMP | STA | LDA | NOP | STP | POP | PSH | LDR | STR) & Rs2[1]);
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assign s2[0] = (~(JMP | STA | LDA | NOP | STP | POP | PSH | LDR | STR) & Rs2[0]);
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assign s3[2] = (~(STA | LDA | NOP | STP | PSH | POP) & Rd[2]);
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assign s3[1] = (~(STA | LDA | NOP | STP | PSH | POP) & Rd[1]);
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assign s3[0] = (~(STA | LDA | NOP | STP | PSH | POP) & Rd[0]);
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assign R0_count = EXEC1 & (~(JMP | JMA | (JCX & COND_result) | STP | CLL | RTN));
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assign R0_en = (EXEC1 & (~(STA | NOP | STP | LDA | PSH | LDR | CLL | RTN) & ~Rd[2] & ~Rd[1] & ~Rd[0] | JMP | (JCX & COND_result) | JMA)) | (EXEC2 & LDA & ~Rls[2] & ~Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | STR | LDR) & ~Rd[2] & ~Rd[1] & ~Rd[0]) | (EXEC2 & RTN) | (EXEC1 & CLL);
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assign R1_en = (EXEC1 & ~(JMP | JMA | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR | CLL | RTN) & ~Rd[2] & ~Rd[1] & Rd[0]) | (EXEC2 & LDA & ~Rls[2] & ~Rls[1] & Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | LDR) & ~Rd[2] & ~Rd[1] & Rd[0]);
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assign R2_en = (EXEC1 & ~(JMP | JMA | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR | CLL | RTN) & ~Rd[2] & Rd[1] & ~Rd[0]) | (EXEC2 & LDA & ~Rls[2] & Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | LDR) & ~Rd[2] & Rd[1] & ~Rd[0]);
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assign R3_en = (EXEC1 & ~(JMP | JMA | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR | CLL | RTN) & ~Rd[2] & Rd[1] & Rd[0]) | (EXEC2 & LDA & ~Rls[2] & Rls[1] & Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | LDR) & ~Rd[2] & Rd[1] & Rd[0]);
|
||||
assign R4_en = (EXEC1 & ~(JMP | JMA | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR | CLL | RTN) & Rd[2] & ~Rd[1] & ~Rd[0]) | (EXEC2 & LDA & Rls[2] & ~Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | LDR) & Rd[2] & ~Rd[1] & ~Rd[0]);
|
||||
assign R5_en = (EXEC1 & ~(JMP | JMA | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR | CLL | RTN) & Rd[2] & ~Rd[1] & Rd[0]) | (EXEC2 & LDA & Rls[2] & ~Rls[1] & Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | LDR) & Rd[2] & ~Rd[1] & Rd[0]);
|
||||
assign R6_en = (EXEC1 & ~(JMP | JMA | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR | CLL | RTN) & Rd[2] & Rd[1] & ~Rd[0]) | (EXEC2 & LDA & Rls[2] & Rls[1] & ~Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | LDR) & Rd[2] & Rd[1] & ~Rd[0]);
|
||||
assign R7_en = (EXEC1 & ~(JMP | JMA | JCX | STA | LDA | MUL | MLA | MLS | NOP | STP | POP | PSH | LDR | CLL | RTN) & Rd[2] & Rd[1] & Rd[0]) | (EXEC2 & LDA & Rls[2] & Rls[1] & Rls[0]) | (EXEC2 & (MUL | MLA | MLS | POP | LDR) & Rd[2] & Rd[1] & Rd[0]);
|
||||
assign s1[2] = (~(JMP | JMA | STA | LDA | NOP | STP | POP | CLL | RTN) & Rs1[2]) | (STA & Rls[2]);
|
||||
assign s1[1] = (~(JMP | JMA | STA | LDA | NOP | STP | POP | CLL | RTN) & Rs1[1]) | (STA & Rls[1]);
|
||||
assign s1[0] = (~(JMP | JMA | STA | LDA | NOP | STP | POP | CLL | RTN) & Rs1[0]) | (STA & Rls[0]);
|
||||
assign s2[2] = (~(JMP | JMA | STA | LDA | NOP | STP | POP | PSH | LDR | STR | CLL | RTN) & Rs2[2]);
|
||||
assign s2[1] = (~(JMP | JMA | STA | LDA | NOP | STP | POP | PSH | LDR | STR | CLL | RTN) & Rs2[1]);
|
||||
assign s2[0] = (~(JMP | JMA | STA | LDA | NOP | STP | POP | PSH | LDR | STR | CLL | RTN) & Rs2[0]);
|
||||
assign s3[2] = (~(STA | LDA | NOP | STP | PSH | POP | RTN) & Rd[2]);
|
||||
assign s3[1] = (~(STA | LDA | NOP | STP | PSH | POP | RTN) & Rd[1]);
|
||||
assign s3[0] = (~(STA | LDA | NOP | STP | PSH | POP | RTN) & Rd[0]);
|
||||
assign s4 = ~(LDA | LDR);
|
||||
assign RAMd_wren = EXEC1 & (STA | STR);
|
||||
assign RAMd_en = EXEC1 & (STA | LDA | STR | LDR);
|
||||
assign RAMi_en = FETCH;
|
||||
assign ALU_en = LDA | STA;
|
||||
assign E2 = EXEC1 & (LDA | MUL | MLA | MLS | POP | LDR);
|
||||
assign stack_en = (EXEC1 & PSH) | ((EXEC1 | EXEC2) & POP);
|
||||
assign E2 = EXEC1 & (LDA | MUL | MLA | MLS | POP | LDR | RTN);
|
||||
assign stack_en = (EXEC1 & (PSH | CLL | RTN | POP));
|
||||
assign stack_rst = STP;
|
||||
assign stack_rw = EXEC1 & PSH;
|
||||
assign stack_rw = EXEC1 & (PSH | CLL);
|
||||
assign s5 = EXEC1 & (STR | LDR);
|
||||
|
||||
endmodule
|
||||
|
66
alu.bsf
66
alu.bsf
|
@ -4,9 +4,9 @@ editor if you plan to continue editing the block that represents it in
|
|||
the Block Editor! File corruption is VERY likely to occur.
|
||||
*/
|
||||
/*
|
||||
Copyright (C) 2019 Intel Corporation. All rights reserved.
|
||||
Copyright (C) 2018 Intel Corporation. All rights reserved.
|
||||
Your use of Intel Corporation's design tools, logic functions
|
||||
and other software and tools, and any partner logic
|
||||
and other software and tools, and its AMPP partner logic
|
||||
functions, and any output files from any of the foregoing
|
||||
(including device programming or simulation files), and any
|
||||
associated documentation or information are expressly subject
|
||||
|
@ -16,14 +16,13 @@ the Intel FPGA IP License Agreement, or other applicable license
|
|||
agreement, including, without limitation, that your use is for
|
||||
the sole purpose of programming logic devices manufactured by
|
||||
Intel and sold by Intel or its authorized distributors. Please
|
||||
refer to the applicable agreement for further details, at
|
||||
https://fpgasoftware.intel.com/eula.
|
||||
refer to the applicable agreement for further details.
|
||||
*/
|
||||
(header "symbol" (version "1.1"))
|
||||
(symbol
|
||||
(rect 16 16 248 224)
|
||||
(rect 16 16 240 192)
|
||||
(text "alu" (rect 5 0 15 12)(font "Arial" ))
|
||||
(text "inst" (rect 8 192 20 204)(font "Arial" ))
|
||||
(text "inst" (rect 8 160 20 172)(font "Arial" ))
|
||||
(port
|
||||
(pt 0 32)
|
||||
(input)
|
||||
|
@ -55,8 +54,8 @@ https://fpgasoftware.intel.com/eula.
|
|||
(port
|
||||
(pt 0 96)
|
||||
(input)
|
||||
(text "opcode[5..0]" (rect 0 0 48 12)(font "Arial" ))
|
||||
(text "opcode[5..0]" (rect 21 91 69 103)(font "Arial" ))
|
||||
(text "instr[15..0]" (rect 0 0 40 12)(font "Arial" ))
|
||||
(text "instr[15..0]" (rect 21 91 61 103)(font "Arial" ))
|
||||
(line (pt 0 96)(pt 16 96)(line_width 3))
|
||||
)
|
||||
(port
|
||||
|
@ -81,62 +80,55 @@ https://fpgasoftware.intel.com/eula.
|
|||
(line (pt 0 144)(pt 16 144)(line_width 3))
|
||||
)
|
||||
(port
|
||||
(pt 0 160)
|
||||
(input)
|
||||
(text "memdatain[15..0]" (rect 0 0 67 12)(font "Arial" ))
|
||||
(text "memdatain[15..0]" (rect 21 155 88 167)(font "Arial" ))
|
||||
(line (pt 0 160)(pt 16 160)(line_width 3))
|
||||
)
|
||||
(port
|
||||
(pt 232 32)
|
||||
(pt 224 32)
|
||||
(output)
|
||||
(text "mul1[15..0]" (rect 0 0 41 12)(font "Arial" ))
|
||||
(text "mul1[15..0]" (rect 170 27 211 39)(font "Arial" ))
|
||||
(line (pt 232 32)(pt 216 32)(line_width 3))
|
||||
(text "mul1[15..0]" (rect 162 27 203 39)(font "Arial" ))
|
||||
(line (pt 224 32)(pt 208 32)(line_width 3))
|
||||
)
|
||||
(port
|
||||
(pt 232 48)
|
||||
(pt 224 48)
|
||||
(output)
|
||||
(text "mul2[15..0]" (rect 0 0 42 12)(font "Arial" ))
|
||||
(text "mul2[15..0]" (rect 169 43 211 55)(font "Arial" ))
|
||||
(line (pt 232 48)(pt 216 48)(line_width 3))
|
||||
(text "mul2[15..0]" (rect 161 43 203 55)(font "Arial" ))
|
||||
(line (pt 224 48)(pt 208 48)(line_width 3))
|
||||
)
|
||||
(port
|
||||
(pt 232 64)
|
||||
(pt 224 64)
|
||||
(output)
|
||||
(text "Rout[15..0]" (rect 0 0 43 12)(font "Arial" ))
|
||||
(text "Rout[15..0]" (rect 168 59 211 71)(font "Arial" ))
|
||||
(line (pt 232 64)(pt 216 64)(line_width 3))
|
||||
(text "Rout[15..0]" (rect 160 59 203 71)(font "Arial" ))
|
||||
(line (pt 224 64)(pt 208 64)(line_width 3))
|
||||
)
|
||||
(port
|
||||
(pt 232 80)
|
||||
(pt 224 80)
|
||||
(output)
|
||||
(text "jump" (rect 0 0 18 12)(font "Arial" ))
|
||||
(text "jump" (rect 193 75 211 87)(font "Arial" ))
|
||||
(line (pt 232 80)(pt 216 80)(line_width 1))
|
||||
(text "jump" (rect 185 75 203 87)(font "Arial" ))
|
||||
(line (pt 224 80)(pt 208 80)(line_width 1))
|
||||
)
|
||||
(port
|
||||
(pt 232 96)
|
||||
(pt 224 96)
|
||||
(output)
|
||||
(text "carry" (rect 0 0 22 12)(font "Arial" ))
|
||||
(text "carry" (rect 189 91 211 103)(font "Arial" ))
|
||||
(line (pt 232 96)(pt 216 96)(line_width 1))
|
||||
(text "carry" (rect 181 91 203 103)(font "Arial" ))
|
||||
(line (pt 224 96)(pt 208 96)(line_width 1))
|
||||
)
|
||||
(port
|
||||
(pt 232 112)
|
||||
(pt 224 112)
|
||||
(output)
|
||||
(text "jumpflags[7..0]" (rect 0 0 57 12)(font "Arial" ))
|
||||
(text "jumpflags[7..0]" (rect 154 107 211 119)(font "Arial" ))
|
||||
(line (pt 232 112)(pt 216 112)(line_width 3))
|
||||
(text "jumpflags[7..0]" (rect 146 107 203 119)(font "Arial" ))
|
||||
(line (pt 224 112)(pt 208 112)(line_width 3))
|
||||
)
|
||||
(port
|
||||
(pt 232 128)
|
||||
(pt 224 128)
|
||||
(output)
|
||||
(text "memaddr[10..0]" (rect 0 0 62 12)(font "Arial" ))
|
||||
(text "memaddr[10..0]" (rect 149 123 211 135)(font "Arial" ))
|
||||
(line (pt 232 128)(pt 216 128)(line_width 3))
|
||||
(text "memaddr[10..0]" (rect 141 123 203 135)(font "Arial" ))
|
||||
(line (pt 224 128)(pt 208 128)(line_width 3))
|
||||
)
|
||||
(drawing
|
||||
(rectangle (rect 16 16 216 192)(line_width 1))
|
||||
(rectangle (rect 16 16 208 160)(line_width 1))
|
||||
)
|
||||
)
|
||||
|
|
19
alu.v
19
alu.v
|
@ -1,14 +1,13 @@
|
|||
module alu (enable, Rs1, Rs2, Rd, opcode, mulresult, exec2, stackout, memdatain, mul1, mul2, Rout, jump, carry, jumpflags, memaddr);
|
||||
module alu (enable, Rs1, Rs2, Rd, instr, mulresult, exec2, stackout, mul1, mul2, Rout, jump, carry, jumpflags, memaddr);
|
||||
|
||||
input enable; // active LOW, disables the ALU during load/store operations so that undefined behaviour does not occur
|
||||
input signed [15:0] Rs1; // input source register 1
|
||||
input signed [15:0] Rs2; // input source register 2
|
||||
input signed [15:0] Rd; // input destination register
|
||||
input [5:0] opcode; // opcode is fed in from instruction using wires outside ALU
|
||||
input [15:0] instr; // opcode is fed in from instruction using wires outside ALU
|
||||
input signed [31:0] mulresult; // 32-bit result from multiplier
|
||||
input exec2; // Input from state machine to indicate when to take in result from multiplication
|
||||
input [15:0] stackout; // input from stack to be fed back to registers
|
||||
input signed [15:0] memdatain; // input data from RAMd
|
||||
|
||||
output reg signed [15:0] mul1; // first number to be multiplied
|
||||
output reg signed [15:0] mul2; // second number to be multiplied
|
||||
|
@ -18,6 +17,7 @@ output reg carry; // Internal carry register that is updated during appropriate
|
|||
output [7:0] jumpflags;
|
||||
output reg [10:0] memaddr; // address to load data from / store data to RAMd
|
||||
|
||||
wire [5:0]opcode = instr[14:9]; //opcode of current instruction
|
||||
reg signed [16:0] alusum; // extra bit to hold carry from operations other than Multiply
|
||||
assign Rout = alusum [15:0];
|
||||
assign jump = (alusum[16] && ((opcode[5:2] == 4'b0000) | (opcode[5:2] == 4'b0001) | (opcode[5:2] == 4'b0010)));
|
||||
|
@ -160,9 +160,13 @@ always @(opcode, mulresult)
|
|||
6'b100011: ;
|
||||
|
||||
6'b100100: alusum = {1'b0, (Rs1 >> Rs2[3:0]) | (Rs1 << (16 - Rs2[3:0]))}; // ROR Shift Right Loop (Rd = Rs1 shifted right by Rs2, but Rs1[0] -> Rs1[15])
|
||||
6'b100101: alusum = ({Rs1, carry} >> (Rs2 % 17)) | ({Rs1, carry} << (17 - (Rs2 % 17)));// RRC Shift Right Loop w/ Carry (Rd = Rs1 shifted right by Rs2, but Rs1[0] -> Carry & Carry -> Rs1[15])
|
||||
6'b100110: ;
|
||||
6'b100111: ;
|
||||
// 6'b100101: alusum = ({Rs1, carry} >> (Rs2 % 17)) | ({Rs1, carry} << (17 - (Rs2 % 17)));// RRC Shift Right Loop w/ Carry (Rd = Rs1 shifted right by Rs2, but Rs1[0] -> Carry & Carry -> Rs1[15])
|
||||
6'b100110: alusum = {1'b1, Rd}; //CLL function call
|
||||
6'b100111: begin //RTN return to prev call
|
||||
if(exec2) begin
|
||||
alusum = {1'b0, stackout};
|
||||
end
|
||||
end
|
||||
|
||||
6'b101000: alusum = {1'b0, Rs1}; // PSH Push value to stack (Stack = Rs1)
|
||||
6'b101001: alusum = {1'b0, stackout}; // POP Pop value from stack (Rd = Stack)
|
||||
|
@ -170,9 +174,6 @@ always @(opcode, mulresult)
|
|||
if(!exec2) begin
|
||||
memaddr = Rs1[10:0];
|
||||
end
|
||||
else begin
|
||||
alusum = {1'b0, memdatain};
|
||||
end
|
||||
end
|
||||
6'b101011: begin // STR Indirect Store (Mem[Rd] = Rs1)
|
||||
memaddr = Rd[10:0];
|
||||
|
|
Loading…
Reference in a new issue