3 use IEEE.std_logic_1164.all;
4 use IEEE.numeric_std.all;
8 architecture behaviour of rom is
10 signal vsim_bug : std_logic_vector(31 downto 0);
15 if rising_edge(clk) then
16 -- data_out <= ram(to_integer(UNSIGNED(rd_addr)));
19 --case rrrr_addr(10 downto 0) is
20 case vsim_bug(6 downto 0) is
22 -- when "00000000000" => data_out <= "11101101000000000000000000000000"; --
23 -- when "00000000001" => data_out <= "11101101001000000000000000000000"; --
24 -- when "00000000010" => data_out <= "11100111101000000000000000000000"; --
26 -- when "00000000011" => data_out <= "11100001000000000000000000100001"; --
27 -- when "00000000100" => data_out <= "11101100100000000000001100000000"; --
28 -- when "00000000101" => data_out <= "00001011011111111111111010000011"; --
30 -- when "00000000110" => data_out <= "11101101000000000000000000001000"; --
31 -- when "00000000111" => data_out <= "11100111100000000000000000001111"; --
32 -- when "00000001000" => data_out <= "11100111100000000000000000010011"; -- --
35 -- when "00000001001" => data_out <= x"ed080048"; --x"ed080048"; --
36 -- when "00000001010" => data_out <= x"ed500080"; --
37 -- when "00000001011" => data_out <= x"fd500002"; --
38 -- when "00000001100" => data_out <= x"eb000107";
39 -- when "00000001101" => data_out <= "11101011000000000000011010000010"; --"11101011000000000000000000000010";
41 -- when "00000001110" => data_out <= x"e5088800";
42 -- when "00000001111" => data_out <= x"e0150800";
43 -- when "00000010000" => data_out <= x"e7010000";
44 -- when "00000010001" => data_out <= x"ec800000";
45 -- when "00000010010" => data_out <= x"0b000008";
46 -- when "00000010011" => data_out <= x"e1910020";
47 -- when "00000010100" => data_out <= x"eb7ffe07";
48 -- when "00000010101" => data_out <= x"e7197ffc";
49 -- when "00000010110" => data_out <= x"e0018000";
51 -- when "00000010111" => data_out <= x"e1110020";
52 -- when "00000011000" => data_out <= x"e7810000";
53 -- when "00000011001" => data_out <= x"eb00000a";
56 -- when "00000011010" => data_out <= x"ed290080";
57 -- when "00000011011" => data_out <= x"e1080000";
59 -- when "00000011100" => data_out <= x"e78a8000";
61 -- when "00000011101" => data_out <= x"ed510058";
62 -- when "00000011110" => data_out <= x"e7850000";
66 --1;00000000;ed010058;ldi r0, 0x200B;;
67 --1;00000004;ed090060;ldi r1, 0x200C;;
68 --1;00000008;ed110080;ldi r2, 0x2010;;
69 --1;0000000c;e7188000;ldw r3, 0(r1);;
70 --1;00000010;ec1a0000;cmp r3, r4;;
71 --1;00000014;1b7ffd81;breq 0;;
72 --1;00000018;e7980000;stw r3, 0(r0);;
73 --1;0000001c;e7990000;stw r3, 0(r2);;
74 --1;00000020;e1218000;addi r4, r3, 0;;
75 --1;00000024;eb7ffb81;br 0;;
77 -- when "0000000" => data_out <= x"ed010058";
78 -- when "0000001" => data_out <= x"ed090060";
79 -- when "0000010" => data_out <= x"ed110080"; --x"e7188000"; f
80 -- when "0000011" => data_out <= x"e7188000"; --x"ec1a0000";
81 -- when "0000100" => data_out <= x"ec1a0000";
82 -- when "0000101" => data_out <= x"1b7ffe01";
83 -- when "0000110" => data_out <= x"e7990000"; -- f
84 -- when "0000111" => data_out <= x"e7980000";
85 -- when "0001000" => data_out <= x"e1218000";
86 -- when "0001001" => data_out <= x"eb7ffb81";
88 --1;00000000;ed010058;ldi r0, 0x200B;;;
89 --1;00000004;ed090060;ldi r1, 0x200C;;;
90 --1;00000008;ed110080;ldi r2, 0x2010;;;
91 --1;0000000c;ed390078;ldi r7, 0x200F;;;
92 --1;00000010;ed480012;ldih r9, 0x0002;;;
93 --1;00000014;e7438000;ldw r8, 0(r7);;;
94 --1;00000018;e254c000;and r10, r9, r8;;;
95 --1;0000001c;07188000;ldwnz r3, 0(r1);;;
96 --1;00000020;07980000;stwnz r3, 0(r0);;;
97 --1;00000024;07990000;stwnz r3, 0(r2);;;
98 --1;00000028;eb7ffb01;br 0;;;
102 -- when "0000000" => data_out <= x"ed010058";
103 -- when "0000001" => data_out <= x"ed090060";
104 -- when "0000010" => data_out <= x"ed110080"; --x"e7188000"; f
105 -- when "0000011" => data_out <= x"ed390000"; --x"ec1a0000";
106 -- when "0000100" => data_out <= x"ed480012";
107 -- when "0000101" => data_out <= x"e7438000";
108 -- when "0000110" => data_out <= x"e254c000"; -- f
109 -- when "0000111" => data_out <= x"07188000";
110 -- when "0001000" => data_out <= x"07980000";
111 -- when "0001001" => data_out <= x"07990000";
112 -- when "0001010" => data_out <= x"eb7ffb81";
114 -------------------------------------------
116 -- when "00000000000" => data_out <= x"ed000000";
117 -- when "00000000001" => data_out <= x"ed080008";
118 -- when "00000000010" => data_out <= x"e9880000"; --x"e7188000"; f
119 -- when "00000000011" => data_out <= x"e5088400"; --x"ec1a0000";
120 -- when "00000000100" => data_out <= x"e9880001";
121 -- when "00000000101" => data_out <= x"e7180000";
122 -- when "00000000110" => data_out <= x"e9200001"; -- f
123 -- when "00000000111" => data_out <= x"e7a00004";
124 -- when "00000001000" => data_out <= x"e7280004";
125 -- -- when "00000001001" => data_out <= x"eb7ffb81";
126 when "0000000" => data_out <= x"eb000183"; -- br+ main
127 when "0000001" => data_out <= x"eb000103"; -- br+ main
128 when "0000010" => data_out <= x"eb000008"; -- ret
129 when "0000011" => data_out <= x"ed510000"; -- ldi r10, UART_BASE@lo
130 when "0000100" => data_out <= x"ed500002"; -- ldih r10, UART_BASE@hi
131 when "0000101" => data_out <= x"ed590180"; -- ldi r11, PBASE@lo
132 when "0000110" => data_out <= x"ed580002"; -- ldih r11, PBASE@hi
133 when "0000111" => data_out <= x"eb000985"; -- call recv_byte
134 when "0001000" => data_out <= x"e4088800"; -- xor r1, r1, r1
135 when "0001001" => data_out <= x"ec800240"; -- cmpi r0, 0x48
136 when "0001010" => data_out <= x"1b001803"; -- breq+ bt_H
137 when "0001011" => data_out <= x"eb7ffe01"; -- br poll
138 when "0001100" => data_out <= x"e71d0000"; -- ldw r3, UART_STATUS(r10)
139 when "0001101" => data_out <= x"e2980008"; -- andx r3, UART_TRANS_EMPTY
140 when "0001110" => data_out <= x"0b7fff03"; -- brnz+ send_byte
141 when "0001111" => data_out <= x"e78d0008"; -- stw r1, UART_TRANS(r10)
142 when "0010000" => data_out <= x"eb000008"; -- ret
143 when "0010001" => data_out <= x"e5008008"; -- lrs r0, r1, 0
144 when "0010010" => data_out <= x"eb7ffd05"; -- call send_byte
145 when "0010011" => data_out <= x"e500a008"; -- lrs r0, r1, 8
146 when "0010100" => data_out <= x"eb7ffc05"; -- call send_byte
147 when "0010101" => data_out <= x"e500c008"; -- lrs r0, r1, 16
148 when "0010110" => data_out <= x"eb7ffb05"; -- call send_byte
149 when "0010111" => data_out <= x"e500e008"; -- lrs r0, r1, 24
150 when "0011000" => data_out <= x"eb7ffa05"; -- call send_byte
151 when "0011001" => data_out <= x"eb000008"; -- ret
152 when "0011010" => data_out <= x"e71d0000"; -- ldw r3, UART_STATUS(r10)
153 when "0011011" => data_out <= x"e2980010"; -- andx r3, UART_RECV_NEW
154 when "0011100" => data_out <= x"1b7fff03"; -- brzs+ recv_byte
155 when "0011101" => data_out <= x"e4000000"; -- xor r0, r0, r0
156 when "0011110" => data_out <= x"e705000c"; -- ldw r0, UART_RECV(r10)
157 when "0011111" => data_out <= x"eb000008"; -- ret
158 when "0100000" => data_out <= x"e4088800"; -- xor r1, r1, r1
159 when "0100001" => data_out <= x"eb7ffc85"; -- call recv_byte
160 when "0100010" => data_out <= x"e3080800"; -- or r1, r0, r1
161 when "0100011" => data_out <= x"eb7ffb85"; -- call recv_byte
162 when "0100100" => data_out <= x"e508a000"; -- lls r1, r1, 8
163 when "0100101" => data_out <= x"e3080800"; -- or r1, r0, r1
164 when "0100110" => data_out <= x"eb7ffa05"; -- call recv_byte
165 when "0100111" => data_out <= x"e508a000"; -- lls r1, r1, 8
166 when "0101000" => data_out <= x"e3080800"; -- or r1, r0, r1
167 when "0101001" => data_out <= x"eb7ff885"; -- call recv_byte
168 when "0101010" => data_out <= x"e508a000"; -- lls r1, r1, 8
169 when "0101011" => data_out <= x"e3080800"; -- or r1, r0, r1
170 when "0101100" => data_out <= x"e1008000"; -- addi r0, r1, 0
171 when "0101101" => data_out <= x"eb000008"; -- ret
172 when "0101110" => data_out <= x"eb7ff605"; -- call recv_byte
173 when "0101111" => data_out <= x"e4088800"; -- xor r1, r1, r1
174 when "0110000" => data_out <= x"ec8002b8"; -- cmpi r0, 0x57
175 when "0110001" => data_out <= x"1b000601"; -- breq- bt_W
176 when "0110010" => data_out <= x"ec800290"; -- cmpi r0, 0x52
177 when "0110011" => data_out <= x"1b000581"; -- breq- bt_R
178 when "0110100" => data_out <= x"ec800288"; -- cmpi r0, 0x51
179 when "0110101" => data_out <= x"1b000501"; -- breq- bt_Q
180 when "0110110" => data_out <= x"ec8002a0"; -- cmpi r0, 0x54
181 when "0110111" => data_out <= x"1b000781"; -- breq- bt_T
182 when "0111000" => data_out <= x"ec800250"; -- cmpi r0, 0x4a
183 when "0111001" => data_out <= x"1b000a01"; -- breq- bt_J
184 when "0111010" => data_out <= x"ed080278"; -- ldi r1, 0x4f
185 when "0111011" => data_out <= x"eb7fe885"; -- call send_byte
186 when "0111100" => data_out <= x"eb7ff901"; -- br bootrom
187 when "0111101" => data_out <= x"eb7ff881"; -- br bootrom
188 when "0111110" => data_out <= x"eb000881"; -- br tehend
189 when "0111111" => data_out <= x"eb7ff085"; -- call recv_word
190 when "1000000" => data_out <= x"e1300000"; -- mov r6, r0
191 when "1000001" => data_out <= x"eb7fef85"; -- call recv_word
192 when "1000010" => data_out <= x"e7830000"; -- stw r0, 0(r6)
193 when "1000011" => data_out <= x"ed080208"; -- ldi r1, 0x41
194 when "1000100" => data_out <= x"eb7fe405"; -- call send_byte
195 when "1000101" => data_out <= x"eb7ff481"; -- br bootrom
196 when "1000110" => data_out <= x"eb7fed05"; -- call recv_word
197 when "1000111" => data_out <= x"e1100000"; -- mov r2, r0
198 when "1001000" => data_out <= x"ed080238"; -- ldi r1, 0x47
199 when "1001001" => data_out <= x"eb7fe185"; -- call send_byte
200 when "1001010" => data_out <= x"e7090000"; -- ldw r1, 0(r2)
201 when "1001011" => data_out <= x"eb7fe305"; -- call send_word
202 when "1001100" => data_out <= x"eb7ff101"; -- br bootrom
203 when "1001101" => data_out <= x"eb7fe985"; -- call recv_word
204 when "1001110" => data_out <= x"eb800000"; -- brr r0
205 when "1001111" => data_out <= x"e4088800"; -- xor r1, r1, r1
206 when "1010000" => data_out <= x"ed080208"; -- ldi r1, 0x41
207 when "1010001" => data_out <= x"eb7fdd85"; -- call send_byte
208 when "1010010" => data_out <= x"e4088800"; -- xor r1, r1, r1
209 when "1010011" => data_out <= x"ed080210"; -- ldi r1, 0x42
210 when "1010100" => data_out <= x"eb7fdc05"; -- call send_byte
211 when "1010101" => data_out <= x"e4088800"; -- xor r1, r1, r1
212 when "1010110" => data_out <= x"ed080218"; -- ldi r1, 0x43
213 when "1010111" => data_out <= x"eb7fda85"; -- call send_byte
214 -- just nop until rom end!
215 when others => data_out <= x"fd000000";
220 vsim_bug(6 downto 0) <= rd_addr;
221 vsim_bug(31 downto 7) <= (others => '0');
222 end architecture behaviour;