32 lines
1.2 KiB
Verilog
32 lines
1.2 KiB
Verilog
/* ucode_header.v - Labels and global information useful to modules interfacing with the microcode
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This file is part of the 9086 project.
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Copyright (c) 2023 Efthymios Kritikos
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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`define UCODE_SIZE 17
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`define UCODE_DATA_BITS 40
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`define UCODE_ADDR_BITS $clog2(`UCODE_SIZE)
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/* DEFINE ADDRESSES IN THE MICROCODE */
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`define UCODE_NO_INSTRUCTION 5'b00000
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`define UCODE_CALL_ENTRY 5'b00001
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`define UCODE_RET_ENTRY 5'b00100
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`define UCODE_STOS_ENTRY 5'b00110
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`define UCODE_PUSH_ENTRY 5'b01000
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`define UCODE_POP_ENTRY 5'b01010
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`define UCODE_INT_ENTRY 5'b01100
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