132 lines
4.3 KiB
Python
132 lines
4.3 KiB
Python
# TABLES
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c_pins = [
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"reset_context",
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"reset_m_state",
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"HALT+",
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"MREQ+",
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"IOREQ+",
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"RD+",
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"WR+",
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"",
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"IR_write_en",
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"DE_HL_tgl",
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"shadow_reg_tgl",
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"AF_toggle",
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"",
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"",
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"sr_read_en",
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"sr_write_en",
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"mr_read_en",
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"mr_read_0",
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"mr_read_1",
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"mr_read_2",
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"mr_write_en",
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"mr_write_0",
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"mr_write_1",
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"mr_write_2",
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"sr_read_0",
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"sr_read_1",
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"sr_read_2",
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"sr_read_3",
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"sr_write_0",
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"sr_write_1",
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"sr_write_2",
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"sr_write_3",
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"F_read_en",
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"F_write_en",
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"ACU_write_en",
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"TMP_write_en",
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"Flatch_read_en",
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"Flatch_write_en",
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"Flatch_write_from_DB",
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"alu_f_use_overflow",
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"alu_dev_0",
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"alu_dev_1",
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"alu_dev_2",
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"alu_op_0",
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"alu_op_1",
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"alu_op_2",
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"alu_op_3",
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"alu_op_4",
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"alu_en",
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"addr_inc_en",
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"addr_dec",
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"internal_byte_to_db_en",
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"internal_byte_0",
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"",
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"",
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"exec_if_context",
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"exec_if_cond",
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"cond_0",
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"cond_1",
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"cond_2",
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"CB_prefix_set",
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"ED_prefix_set",
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"DD_prefix_set",
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"FD_prefix_set",
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]
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c_qw = {}
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for pin in c_pins:
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#print(pin, 2**c_pins.index(pin))
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c_qw[pin] = 2**c_pins.index(pin)
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r = ['B', 'C', 'D', 'E', 'H', 'L', '(HL)', 'A']
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rp = ['BC', 'DE', 'HL', 'SP']
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rp2 = ['BC', 'DE', 'HL', 'AF']
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sr = ['SPH','SPL','SP','W','Z','WZ','PCH','PCL','PC']
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cc = ["NZ", "Z", "NC", "C", "PO", "PE", "P", "M"]
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cc_i = {"NZ":1, "Z":0, "NC":3, "C":2, "PO":5, "PE":4, "P":7, "M":6}
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flags = ["C","N","P/V","F3","H","F5","Z","S"]
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alu_dev = ["ALU", "SLU", "INC", "BMU", "SLUA", "DAA"]
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alu = ["ADD", "ADC", "SUB", "SBC", "AND", "XOR", "OR", "NOT"]
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rot = ["RLC", "RRC", "RL", "RR", "SLA", "SRA", "SLL", "SRL", "RRD","","","","RLD"]
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inc = ["PASS","INC", "", "DEC"]
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bit = {"SET": 16, "RESET": 8}
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bli = {
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4: ["LDI", "CPI", "INI", "OUTI"],
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5: ["LDD", "CPD", "IND", "OUTD"],
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6: ["LDIR", "CPIR", "INIR", "OTIR"],
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7: ["LDDR", "CPDR", "INDR", "OTDR"]
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}
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internal_byte = ["FF", "C7"]
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def exec_if_cond(c_code):
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return c_qw["exec_if_cond"] | (c_code << c_pins.index("cond_0"))
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def internal_byte_to_db(byte_code):
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return c_qw["internal_byte_to_db_en"] | (byte_code << c_pins.index("internal_byte_0"))
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def mr_read(register_index):
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return c_qw["mr_read_en"] | (register_index << c_pins.index("mr_read_0"))
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def mr_write(register_index):
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return c_qw["mr_write_en"] | (register_index << c_pins.index("mr_write_0"))
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def sr_read(register_index):
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return c_qw["sr_read_en"] | (register_index << c_pins.index("sr_read_0"))
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def sr_write(register_index):
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return c_qw["sr_write_en"] | (register_index << c_pins.index("sr_write_0"))
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def alu_op(op,dev=0,save_flags=True,use_overflow=True):
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return (dev << c_pins.index("alu_dev_0")) | (op << c_pins.index("alu_op_0")) | c_qw["alu_en"] | (0, c_qw["alu_f_use_overflow"])[use_overflow] | (0, c_qw["Flatch_write_en"])[save_flags]
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def cp_bit(index):
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return (alu_dev.index("BMU") << c_pins.index("alu_dev_0")) | (index << c_pins.index("alu_op_0")) | c_qw["alu_f_use_overflow"] | c_qw["Flatch_write_en"]
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def set_bit(index):
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return (alu_dev.index("BMU") << c_pins.index("alu_dev_0")) | (index << c_pins.index("alu_op_0")) | (bit["SET"] << c_pins.index("alu_op_0")) | c_qw["alu_en"]
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def reset_bit(index):
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return (alu_dev.index("BMU") << c_pins.index("alu_dev_0")) | (index << c_pins.index("alu_op_0")) | (bit["RESET"] << c_pins.index("alu_op_0")) | c_qw["alu_en"]
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nop = 0
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inc_pc = sr_read(sr.index("PC")) | c_qw["addr_inc_en"] | sr_write(sr.index("PC"))
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clear_flatch = c_qw["Flatch_write_from_DB"] | c_qw["Flatch_write_en"]
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f_to_flatch = c_qw["F_read_en"] | c_qw["Flatch_write_from_DB"] | c_qw["Flatch_write_en"]
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flatch_to_f = c_qw["Flatch_read_en"] | c_qw["F_write_en"]
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f_to_tmp = c_qw["F_read_en"] | c_qw["TMP_write_en"]
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f_to_acu = c_qw["F_read_en"] | c_qw["ACU_write_en"]
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clear_acu = c_qw["ACU_write_en"]
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clear_tmp = c_qw["TMP_write_en"]
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a_to_acu = mr_read(r.index("A")) | c_qw["ACU_write_en"]
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tmp_to_db = alu_op(0,alu_dev.index("INC"),False) #super hacky
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mem_read = c_qw["MREQ+"] | c_qw["RD+"]
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mem_write = c_qw["MREQ+"] | c_qw["WR+"]
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io_read = c_qw["IOREQ+"] | c_qw["RD+"]
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io_write = c_qw["IOREQ+"] | c_qw["WR+"]
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exec_if_context = c_qw["exec_if_context"] |