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STD CHUMP H/W V5
License: Public Domain
Mode: Editors' pick
- 0
Update time：
2022-12-25 05:35:38
Creation time：
2021-09-16 04:17:56
Description
Its a 4 Bit Harvard Architecture CPU:
256bx8 ROM (Flash Chip)
15bx4 RAM (CMOS 6116 SRAM)
1 I/O port
Single Step or Clock
OpCodes:
| OpCode | Instruction | Comments |
| 0 | ADD const | ACC = ACC PLUS CONST |
| 1 | ADD mem | ACC = ACC PLUS MEM[ADDR] |
| 2 | LOAD const | ACC = CONST |
| 3 | LOAD mem | ACC = MEM[ADDR] |
| 4 | NAND const | ACC = ACC NAND CONST |
| 5 | NAND mem | ACC = ACC NAND MEM[ADDR] |
| 6 | XOR const | ACC = ACC XOR CONST |
| 7 | XOR mem | ACC = ACC XOR MEM[ADDR] |
| 8 | JUMP const | IF (!CARRY=HIGH) THEN PC=CONST |
| 9 | JUMP mem | IF (!CARRY=HIGH) THEN PC=MEM[ADDR] |
| A | STORE const | MEM[ADDR] = ACC |
| B | STORE mem | MEM[MEM[ADDR]] = ACC |
| C | READ const | ADDR = CONST |
| D | READ mem | ADDR = MEM[ADDR] |
| E | PAGE const | PAGE = CONST |
| F | PAGE mem | PAGE = MEM[ADDR] |
Regards AlanX
Design Drawing
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 22u | C1 | RAD0.2 | 1 |
| 2 | 1u | C2,C5,C_OSC | RAD0.2 | 3 |
| 3 | 1N4148 | D0 | DO-35 | 1 |
| 4 | POWER_JACKPTH | JP1 | POWER_JACK_PTH | 1 |
| 5 | K4-6×6_TH | KEY1,KEY2,KEY3,KEY4 | KEY-TH_4P-L6.0-W6.0-P4.50-LS6.5 | 4 |
| 6 | LED | LED1,LED2,LED3,LED4,LED5,LED6,LED7,LED8,LED9,LED10,LED11,LED12,LED13,LED14,LED15,LED16,LED17,LED18,LED19,LED20,LED21,LED22,LED23,LED24,LED25,LED26,LED27,LED28,LED29,LED30,LED31,LED32,LED33,LED34 | LED-TH_BD4.2-P2.54-FD | 34 |
| 7 | 1k | R1,R5,R7,R8,R9,R10,R11,R12,R13,R14,R15,R16,R17,R18,R19,R20,R21,R22,R23,R24,R25,R26,R27,R28,R29,R30,R31,R32,R33,R34,R35,R40,R41,R42,R43,R44 | AXIAL-0.4 | 36 |
| 8 | 10k | R2,R3,R4,R6,R36,R37,R38,R39 | AXIAL-0.4 | 8 |
| 9 | 100k | R_OSC | RES-TH-L400 | 1 |
| 10 | DIP8 SWITCH | SW1 | SW-TH_DIPSWITCHEI-04 | 1 |
| 11 | HDR-M-2.54_1x1 | TP1 | HDR-M-2.54_1X1 | 1 |
| 12 | 74HC138 | U4 | DIP16 | 1 |
| 13 | 74HC161N | U5 | DIP16 | 1 |
| 14 | 74HC125N | U6 | DIP14 | 1 |
| 15 | 74HC173 | U7,U17 | DIP16 | 2 |
| 16 | 74HC157 | U10 | DIP16 | 1 |
| 17 | HD74HC283N | U12 | DIP16 | 1 |
| 18 | SN74HC86N | U13 | DIP-14_L20.0-W7.6-P2.54-LS8.0-BL | 1 |
| 19 | SN74HC153N | U14,U15 | DIP-16_L19.3-W6.4-P2.54-LS8.0-BL | 2 |
| 20 | 74HC173N | U16 | DIP16 | 1 |
| 21 | PCD5101P | U18 | DIP22-400 | 1 |
| 22 | 100n | X1,X2,X3,X4,X5,X6,X7,X8,X9,X10,X11,X12,X13,X14,X15,X16,X17,X18,X19,X20,X21,X22,X23 | RAD0.2 | 23 |
| 23 | 74HC132 | U1 | DIP14 | 1 |
| 24 | 74HC20N | U2,U21 | DIP14 | 2 |
| 25 | 74HC32N | U3,U19 | DIP14 | 2 |
| 26 | 74HC00N | U11,U22 | DIP14 | 2 |
| 27 | 74HC74N | U20 | DIP14 | 1 |
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