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Removed now useless register init code and changed disas command name

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(Tim) Efthimis Kritikos 2023-02-10 15:35:43 +00:00
parent bba230fbce
commit cd918302cc
3 changed files with 5 additions and 13 deletions
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4
cpu/Makefile
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@ -30,6 +30,6 @@ boot_code.txt:boot_code.bin
boot_code.bin:boot_code.asm boot_code.bin:boot_code.asm
as86 -0 $< -b $@ as86 -0 $< -b $@
.PHONY: dumpas .PHONY: disas
dumpas: boot_code.bin disas: boot_code.bin
objdump -D -b binary -m i8086 boot_code.bin objdump -D -b binary -m i8086 boot_code.bin

4
cpu/boot_code.asm
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@ -1,4 +1,6 @@
MOV CX,#0x1234 MOV AX,#0x0000
MOV CX,#0x0000
MOV BX,#0x0000
ADD AX,#0xDEAD ADD AX,#0xDEAD
ADD CX,#0xBEEF ADD CX,#0xBEEF
ADD CX,#0x4111 ADD CX,#0x4111

10
cpu/registers.v
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@ -2,16 +2,6 @@ module register_file ( input [2:0]addr1, inout [15:0]data1, input wire read1, in
reg [15:0] registers [7:0]; reg [15:0] registers [7:0];
assign data2 = !read2 ? registers[addr2] : 'hz; assign data2 = !read2 ? registers[addr2] : 'hz;
assign data1 = !read1 ? registers[addr1] : 'hz; assign data1 = !read1 ? registers[addr1] : 'hz;
initial begin
registers['b000]=0;
registers['b001]=0;
registers['b010]=0;
registers['b011]=0;
registers['b100]=0;
registers['b101]=0;
registers['b110]=0;
registers['b111]=0; // TODO Don't clear. Remove after we implement the MOV instruction
end
always @(negedge write1) begin always @(negedge write1) begin
registers[addr1] = data1; registers[addr1] = data1;
//$display("registers: 0:%04x 1:%04x 2:%04x",registers[0],registers[1],registers[2]); //$display("registers: 0:%04x 1:%04x 2:%04x",registers[0],registers[1],registers[2]);