Difference between revisions of "RETRO-65C816"
Jump to navigation
Jump to search
Blwikiadmin (talk | contribs) |
Blwikiadmin (talk | contribs) |
||
| Line 578: | Line 578: | ||
! 5CEFA2 | ! 5CEFA2 | ||
! 10C1006 | ! 10C1006 | ||
| + | ! J1 | ||
! Function | ! Function | ||
|- | |- | ||
| Line 585: | Line 586: | ||
| GND | | GND | ||
| GND | | GND | ||
| − | | | + | | N/C |
| + | | | ||
|- | |- | ||
| 2 | | 2 | ||
| Line 592: | Line 594: | ||
| GND | | GND | ||
| GND | | GND | ||
| − | | | + | | N/C |
| + | | | ||
|- | |- | ||
| 3 | | 3 | ||
| Line 600: | Line 603: | ||
| 3.3V | | 3.3V | ||
| J1-1 | | J1-1 | ||
| + | | | ||
|- | |- | ||
| 4 | | 4 | ||
| Line 607: | Line 611: | ||
| 3.3V | | 3.3V | ||
| J1-2 | | J1-2 | ||
| + | | | ||
|- | |- | ||
| 5 | | 5 | ||
| Line 613: | Line 618: | ||
| GND | | GND | ||
| GND | | GND | ||
| − | | | + | | N/C |
| + | | | ||
|- | |- | ||
| 6 | | 6 | ||
| Line 620: | Line 626: | ||
| GND | | GND | ||
| GND | | GND | ||
| − | | | + | | N/C |
| + | | | ||
|- | |- | ||
| 7 | | 7 | ||
| Line 627: | Line 634: | ||
| PIN_AA14 | | PIN_AA14 | ||
| PIN_R9 | | PIN_R9 | ||
| + | | N/C | ||
| CPUE | | CPUE | ||
|- | |- | ||
| Line 634: | Line 642: | ||
| PIN_AA13 | | PIN_AA13 | ||
| PIN_T9 | | PIN_T9 | ||
| + | | N/C | ||
| CPURES* | | CPURES* | ||
|- | |- | ||
| Line 641: | Line 650: | ||
| PIN_AA15 | | PIN_AA15 | ||
| PIN_R10 | | PIN_R10 | ||
| + | | J1-4 | ||
| CPUMX | | CPUMX | ||
|- | |- | ||
| Line 648: | Line 658: | ||
| PIN_AB15 | | PIN_AB15 | ||
| PIN_T10 | | PIN_T10 | ||
| + | | J1-3 | ||
| CPUCLK | | CPUCLK | ||
|- | |- | ||
| Line 655: | Line 666: | ||
| PIN_Y15 | | PIN_Y15 | ||
| PIN_R11 | | PIN_R11 | ||
| + | | J1-6 | ||
| CPUBE | | CPUBE | ||
|- | |- | ||
| Line 662: | Line 674: | ||
| PIN_Y13 | | PIN_Y13 | ||
| PIN_T11 | | PIN_T11 | ||
| + | | J1-5 | ||
| CPUNMIB | | CPUNMIB | ||
|- | |- | ||
| Line 669: | Line 682: | ||
| PIN_AB18 | | PIN_AB18 | ||
| PIN_R12 | | PIN_R12 | ||
| + | | J1-8 | ||
| CPURWB | | CPURWB | ||
|- | |- | ||
| Line 676: | Line 690: | ||
| PIN_AB17 | | PIN_AB17 | ||
| PIN_T12 | | PIN_T12 | ||
| + | | J1-7 | ||
| CPUIRQB | | CPUIRQB | ||
|- | |- | ||
| Line 683: | Line 698: | ||
| PIN_Y7 | | PIN_Y7 | ||
| PIN_N9 | | PIN_N9 | ||
| + | | J1-10 | ||
| CPUVDA | | CPUVDA | ||
|- | |- | ||
| Line 690: | Line 706: | ||
| PIN_Y16 | | PIN_Y16 | ||
| PIN_M9 | | PIN_M9 | ||
| + | | J1-9 | ||
| CPUABORTB | | CPUABORTB | ||
|- | |- | ||
| Line 697: | Line 714: | ||
| PIN_AA18 | | PIN_AA18 | ||
| PIN_M10 | | PIN_M10 | ||
| + | | J1-12 | ||
| CPUVPA | | CPUVPA | ||
|- | |- | ||
| Line 704: | Line 722: | ||
| PIN_AA17 | | PIN_AA17 | ||
| PIN_P9 | | PIN_P9 | ||
| + | | J1-11 | ||
| CPURDY | | CPURDY | ||
|- | |- | ||
| Line 711: | Line 730: | ||
| PIN_AA20 | | PIN_AA20 | ||
| PIN_P11 | | PIN_P11 | ||
| + | | J1-14 | ||
| CPUVPB | | CPUVPB | ||
|- | |- | ||
| Line 718: | Line 738: | ||
| PIN_AA19 | | PIN_AA19 | ||
| PIN_N11 | | PIN_N11 | ||
| + | | J1-13 | ||
| CPUMLB | | CPUMLB | ||
|- | |- | ||
| Line 725: | Line 746: | ||
| PIN_Y20 | | PIN_Y20 | ||
| PIN_R13 | | PIN_R13 | ||
| − | | 16 | + | | I1-16 |
| + | | | ||
|- | |- | ||
| 22 | | 22 | ||
| Line 732: | Line 754: | ||
| PIN_Y19 | | PIN_Y19 | ||
| PIN_T13 | | PIN_T13 | ||
| − | | 15 | + | | J1-15 |
| + | | | ||
|- | |- | ||
| 23 | | 23 | ||
| Line 739: | Line 762: | ||
| PIN_AB21 | | PIN_AB21 | ||
| PIN_T15 | | PIN_T15 | ||
| − | | 18 | + | | J1-18 |
| + | | | ||
|- | |- | ||
| 24 | | 24 | ||
| Line 746: | Line 770: | ||
| PIN_AB20 | | PIN_AB20 | ||
| PIN_T14 | | PIN_T14 | ||
| − | | 17 | + | | J1-17 |
| + | | | ||
|- | |- | ||
| 25 | | 25 | ||
| Line 753: | Line 778: | ||
| PIN_AA22 | | PIN_AA22 | ||
| PIN_N12 | | PIN_N12 | ||
| − | | 20 | + | | J1-20 |
| + | | | ||
|- | |- | ||
| 26 | | 26 | ||
| Line 760: | Line 786: | ||
| PIN_AB22 | | PIN_AB22 | ||
| PIN_M11 | | PIN_M11 | ||
| − | | 19 | + | | J1-19 |
| + | | | ||
|- | |- | ||
| 27 | | 27 | ||
| Line 767: | Line 794: | ||
| PIN_W22 | | PIN_W22 | ||
| PIN_R14 | | PIN_R14 | ||
| − | | 22 | + | | J1-22 |
| + | | | ||
|- | |- | ||
| 28 | | 28 | ||
| Line 774: | Line 802: | ||
| PIN_Y22 | | PIN_Y22 | ||
| PIN_N13 | | PIN_N13 | ||
| − | | 21 | + | | J1-21 |
| + | | | ||
|- | |- | ||
| 29 | | 29 | ||
| Line 781: | Line 810: | ||
| PIN_Y21 | | PIN_Y21 | ||
| PIN_N14 | | PIN_N14 | ||
| − | | 24 | + | | J1-24 |
| + | | | ||
|- | |- | ||
| 30 | | 30 | ||
| Line 788: | Line 818: | ||
| PIN_W21 | | PIN_W21 | ||
| PIN_P14 | | PIN_P14 | ||
| − | | 23 | + | | J1-23 |
| + | | | ||
|- | |- | ||
| 31 | | 31 | ||
| Line 795: | Line 826: | ||
| PIN_U22 | | PIN_U22 | ||
| PIN_P16 | | PIN_P16 | ||
| − | | 26 | + | | J1-26 |
| + | | | ||
|- | |- | ||
| 32 | | 32 | ||
| Line 802: | Line 834: | ||
| PIN_V21 | | PIN_V21 | ||
| PIN_R16 | | PIN_R16 | ||
| − | | 25 | + | | J1-25 |
| + | | | ||
|- | |- | ||
| 33 | | 33 | ||
| Line 809: | Line 842: | ||
| PIN_V20 | | PIN_V20 | ||
| PIN_N16 | | PIN_N16 | ||
| − | | 28 | + | | J1-28 |
| + | | | ||
|- | |- | ||
| 34 | | 34 | ||
| Line 816: | Line 850: | ||
| PIN_W19 | | PIN_W19 | ||
| PIN_N15 | | PIN_N15 | ||
| − | | 27 | + | | J1-27 |
| + | | | ||
|- | |- | ||
| 35 | | 35 | ||
| Line 823: | Line 858: | ||
| PIN_U21 | | PIN_U21 | ||
| PIN_M16 | | PIN_M16 | ||
| − | | 30 | + | | J1-30 |
| + | | | ||
|- | |- | ||
| 36 | | 36 | ||
| Line 830: | Line 866: | ||
| PIN_U20 | | PIN_U20 | ||
| PIN_M15 | | PIN_M15 | ||
| − | | 29 | + | | J1-29 |
| + | | | ||
|- | |- | ||
| 37 | | 37 | ||
| Line 837: | Line 874: | ||
| PIN_R22 | | PIN_R22 | ||
| PIN_L16 | | PIN_L16 | ||
| − | | 32 | + | | J1-32 |
| + | | | ||
|- | |- | ||
| 38 | | 38 | ||
| Line 844: | Line 882: | ||
| PIN_T22 | | PIN_T22 | ||
| PIN_L15 | | PIN_L15 | ||
| − | | 31 | + | | J1-31 |
| + | | | ||
|- | |- | ||
| 39 | | 39 | ||
| Line 851: | Line 890: | ||
| PIN_P22 | | PIN_P22 | ||
| PIN_P15 | | PIN_P15 | ||
| − | | 34 | + | | J1-34 |
| + | | | ||
|- | |- | ||
| 40 | | 40 | ||
| Line 858: | Line 898: | ||
| PIN_R21 | | PIN_R21 | ||
| PIN_M12 | | PIN_M12 | ||
| − | | 33 | + | | J1-33 |
| + | | | ||
|- | |- | ||
| 41 | | 41 | ||
| Line 865: | Line 906: | ||
| PIN_T20 | | PIN_T20 | ||
| PIN_L14 | | PIN_L14 | ||
| − | | 36 | + | | J1-36 |
| + | | | ||
|- | |- | ||
| 42 | | 42 | ||
| Line 872: | Line 914: | ||
| PIN_T19 | | PIN_T19 | ||
| PIN_L13 | | PIN_L13 | ||
| − | | 35 | + | | J1-35 |
| + | | | ||
|- | |- | ||
| 43 | | 43 | ||
| Line 879: | Line 922: | ||
| PIN_P16 | | PIN_P16 | ||
| PIN_K16 | | PIN_K16 | ||
| − | | 38 | + | | J1-38 |
| + | | | ||
|- | |- | ||
| 44 | | 44 | ||
| Line 886: | Line 930: | ||
| PIN_P17 | | PIN_P17 | ||
| PIN_K15 | | PIN_K15 | ||
| − | | 37 | + | | J1-37 |
| + | | | ||
|- | |- | ||
| 45 | | 45 | ||
| Line 893: | Line 938: | ||
| PIN_N20 | | PIN_N20 | ||
| PIN_K12 | | PIN_K12 | ||
| − | | 40 | + | | J1-40 |
| + | | | ||
|- | |- | ||
| 46 | | 46 | ||
| Line 900: | Line 946: | ||
| PIN_N21 | | PIN_N21 | ||
| PIN_J12 | | PIN_J12 | ||
| − | | 39 | + | | J1-39 |
| + | | | ||
|- | |- | ||
| 47 | | 47 | ||
| Line 907: | Line 954: | ||
| PIN_M21 | | PIN_M21 | ||
| PIN_J14 | | PIN_J14 | ||
| − | | 42 | + | | J1-42 |
| + | | | ||
|- | |- | ||
| 48 | | 48 | ||
| Line 914: | Line 962: | ||
| PIN_M20 | | PIN_M20 | ||
| PIN_J13 | | PIN_J13 | ||
| − | | 41 | + | | J1-41 |
| + | | | ||
|- | |- | ||
| 49 | | 49 | ||
| Line 921: | Line 970: | ||
| PIN_M18 | | PIN_M18 | ||
| PIN_K11 | | PIN_K11 | ||
| − | | 44 | + | | J1-44 |
| + | | | ||
|- | |- | ||
| 50 | | 50 | ||
| Line 928: | Line 978: | ||
| PIN_N19 | | PIN_N19 | ||
| PIN_J11 | | PIN_J11 | ||
| − | | 43 | + | | J1-43 |
| + | | | ||
|- | |- | ||
| 51 | | 51 | ||
| Line 935: | Line 986: | ||
| PIN_L18 | | PIN_L18 | ||
| PIN_G11 | | PIN_G11 | ||
| − | | 46 | + | | J1-46 |
| + | | | ||
|- | |- | ||
| 52 | | 52 | ||
| Line 942: | Line 994: | ||
| PIN_L19 | | PIN_L19 | ||
| PIN_F11 | | PIN_F11 | ||
| − | | 45 | + | | J1-45 |
| + | | | ||
|- | |- | ||
| 53 | | 53 | ||
| Line 949: | Line 1,002: | ||
| PIN_M22 | | PIN_M22 | ||
| PIN_F13 | | PIN_F13 | ||
| − | | 48 | + | | J1-48 |
| + | | | ||
|- | |- | ||
| 54 | | 54 | ||
| Line 956: | Line 1,010: | ||
| PIN_L22 | | PIN_L22 | ||
| PIN_F14 | | PIN_F14 | ||
| − | | 47 | + | | J1-47 |
| + | | | ||
|- | |- | ||
| 55 | | 55 | ||
| Line 963: | Line 1,018: | ||
| PIN_L17 | | PIN_L17 | ||
| PIN_F10 | | PIN_F10 | ||
| + | | N/C | ||
| | | | ||
|- | |- | ||
| Line 970: | Line 1,026: | ||
| PIN_K17 | | PIN_K17 | ||
| PIN_F9 | | PIN_F9 | ||
| + | | N/C | ||
| | | | ||
|- | |- | ||
| Line 977: | Line 1,034: | ||
| PIN_K22 | | PIN_K22 | ||
| PIN_E16 | | PIN_E16 | ||
| + | | N/C | ||
| | | | ||
|- | |- | ||
| Line 984: | Line 1,042: | ||
| PIN_K21 | | PIN_K21 | ||
| PIN_E15 | | PIN_E15 | ||
| + | | N/C | ||
| | | | ||
|- | |- | ||
| Line 991: | Line 1,050: | ||
| PIN_M16 | | PIN_M16 | ||
| PIN_D16 | | PIN_D16 | ||
| + | | N/C | ||
| | | | ||
|- | |- | ||
| Line 998: | Line 1,058: | ||
| PIN_N16 | | PIN_N16 | ||
| PIN_D15 | | PIN_D15 | ||
| + | | N/C | ||
| | | | ||
|- | |- | ||
| Line 1,005: | Line 1,066: | ||
| GND | | GND | ||
| GND | | GND | ||
| − | | 50 | + | | J1-50 |
| + | | | ||
|- | |- | ||
| 62 | | 62 | ||
| Line 1,012: | Line 1,074: | ||
| GND | | GND | ||
| GND | | GND | ||
| − | | 49 | + | | J1-49 |
| + | | | ||
|- | |- | ||
| 63 | | 63 | ||
| Line 1,019: | Line 1,082: | ||
| VIN | | VIN | ||
| VIN | | VIN | ||
| + | | J1-50 | ||
| | | | ||
|- | |- | ||
| Line 1,026: | Line 1,090: | ||
| VIN | | VIN | ||
| VIN | | VIN | ||
| + | | J1-50 | ||
| | | | ||
|- | |- | ||
Revision as of 22:58, 26 August 2022
Contents
- 1 Features
- 2 65C816 CPU
- 3 Connectors
- 4 Mechanicals
- 5 MultiComp On RETRO-65C816 VHDL Code
- 6 References/Notes
- 7 Revision History
- 8 Videos
- 9 Assembly Sheet
Features
- Design based on RETRO-EP4CE15 card
- Adds 65C816 CPU
- 5V level translator for keyboard
- 5V header moved to board edge
- 65C816 CPU
- 3.3V
- 8 MHz
- All pins are brought to FPGA
- Address A0-A15 and Data lines also go directly to the SRAM
- FPGA can have the ROM internally or download it to the SRAM
- 1MB SRAM
- 45nS access time
- USB B
- FTDI USB to TTL
- Tx/Rx LEDs
- VGA
- 2:2:2 R:G:B
- PS/2 keyboard
- 5V KEYBOARD
- Level translator to 3.3V for FPGA
- SD card socket
- Full-sized SD
- QMTECH FPGA card mounts on top
- 95x95mm card
- ODAS form factor
- (4) 6-32 Mounting holes
65C816 CPU
Block Diagram
Timing
Connectors
H1 - 5V
- Install jumper to power card from USB
H2 - VREG I/O Conn
- Power to J1
J1 - I/O Connector
- 50-pin I/O Connector
J2 - Keyboard
- 1x4 header
J3 - 6 FPGA pins
J4 - USB B Serial/Power
- Serial to/from FTDI
- Can power the card
J5 - 5V/GND
- 5V/ground for external 5V logic
J7 Pin Mapping Card to FPGA pins - Right connector
| U7 PIN | EP4CE15 | EP4CE55 | 5CEFA2 | CYC 10 | FUNCTION | U7 PIN | EP4CE15 | EP4CE55 | 5CEFA2 | CYC 10 | FUNCTION | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | GND | GND | GND | GND | GND | 2 | GND | GND | GND | GND | GND | |
| 3 | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V | 4 | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V | |
| 5 | GND | GND | GND | GND | GND | 6 | GND | GND | GND | GND | GND | |
| 7 | PIN_R1 | PIN_R1 | PIN_AA2 | PIN_G1 | PS2CLK | 8 | PIN_R2 | PIN_R2 | PIN_AA1 | PIN_G2 | PS2DAT | |
| 9 | PIN_P1 | PIN_P1 | PIN_Y3 | PIN_D1 | SRAMA4 | 10 | PIN_P2 | PIN_P2 | PIN_W2 | PIN_C2 | SRAMA5 | |
| 11 | PIN_N1 | PIN_N1 | PIN_U1 | PIN_B1 | SRAMA3 | 12 | PIN_N2 | PIN_N2 | PIN_U2 | PIN_F5 | SRAMA6 | |
| 13 | PIN_M1 | PIN_M1 | PIN_N1 | PIN_D3 | SRAMA2 | 14 | PIN_M2 | PIN_M2 | PIN_N2 | PIN_C3 | SRAMA7 | |
| 15 | PIN_J1 | PIN_J1 | PIN_L1 | PIN_B3 | SRAMA1 | 16 | PIN_J2 | PIN_J2 | PIN_L2 | PIN_A3 | SRAM0E_N | |
| 17 | PIN_H1 | PIN_H1 | PIN_G1 | PIN_B4 | SRAMA0 | 18 | PIN_H2 | PIN_H2 | PIN_G2 | PIN_A4 | SRAMA8 | |
| 19 | PIN_F1 | PIN_F1 | PIN_E2 | PIN_E5 | SRAMCS_N | 20 | PIN_F2 | PIN_F2 | PIN_D3 | PIN_A2 | SRAMD7 | |
| 21 | PIN_E1 | PIN_E1 | PIN_C1 | PIN_D4 | SRAMD0 | 22 | PIN_D2 | PIN_D2 | PIN_C2 | PIN_E6 | SRAMD6 | |
| 23 | PIN_C1 | PIN_C1 | PIN_G6 | PIN_C6 | SRAMD1 | 24 | PIN_C2 | PIN_C2 | PIN_H6 | PIN_D6 | SRAMD5 | |
| 25 | PIN_B1 | PIN_B1 | PIN_G8 | PIN_B5 | SRAMD2 | 26 | PIN_B2 | PIN_B2 | PIN_H8 | PIN_A5 | SRAMD4 | |
| 27 | PIN_B3 | PIN_B3 | PIN_F7 | PIN_B6 | SRAMD3 | 28 | PIN_A3 | PIN_A3 | PIN_E7 | PIN_A6 | SRAMA9 | |
| 29 | PIN_B4 | PIN_B4 | PIN_D6 | PIN_B7 | SRAMWE_N | 30 | PIN_A4 | PIN_A4 | PIN_C6 | PIN_A7 | SRAMA10 | |
| 31 | PIN_C4 | PIN_C4 | PIN_E9 | PIN_D8 | SRAMA19 | 32 | PIN_C3 | PIN_C3 | PIN_D9 | PIN_C8 | SRAMA11 | |
| 33 | PIN_B5 | PIN_B5 | PIN_B5 | PIN_D9 | SRAMA18 | 34 | PIN_A5 | PIN_A5 | PIN_A5 | PIN_C9 | SRAMA12 | |
| 35 | PIN_B6 | PIN_B6 | PIN_B6 | PIN_B8 | SRAMA17 | 36 | PIN_A6 | PIN_A6 | PIN_B7 | PIN_A8 | SRAMA13 | |
| 37 | PIN_B7 | PIN_B7 | PIN_A7 | PIN_B9 | SRAMA16 | 38 | PIN_A7 | PIN_A7 | PIN_A8 | PIN_A9 | SRAMA14 | |
| 39 | PIN_B8 | PIN_B8 | PIN_A9 | PIN_E9 | N/C | 40 | PIN_A8 | PIN_A8 | PIN_A10 | PIN_E8 | SRAMA15 | |
| 41 | PIN_B9 | PIN_B9 | PIN_B10 | PIN_E11 | N/C | 42 | PIN_A9 | PIN_A9 | PIN_C9 | PIN_E10 | N/C | |
| 43 | PIN_B10 | PIN_B10 | PIN_G10 | PIN_A10 | USBRX/FPGATX | 44 | PIN_A10 | PIN_A10 | PIN_F10 | PIN_B10 | USBCTS/FPGARTS | |
| 45 | PIN_B13 | PIN_B13 | PIN_C11 | PIN_D12 | USBTX/FPGARX | 46 | PIN_A13 | PIN_A13 | PIN_B11 | PIN_D11 | UBSRTS/FPGACTS | |
| 47 | PIN_B14 | PIN_B14 | PIN_B12 | PIN_B11 | CD_DET | 48 | PIN_A14 | PIN_A14 | PIN_A12 | PIN_A11 | N/C | |
| 49 | PIN_B15 | PIN_B15 | PIN_E12 | PIN_B12 | REDLO | 50 | PIN_A15 | PIN_A15 | PIN_D12 | PIN_A12 | REDHI | |
| 51 | PIN_B16 | PIN_B16 | PIN_D13 | PIN_B13 | GRNLO | 52 | PIN_A16 | PIN_A16 | PIN_C13 | PIN_A13 | GRNHI | |
| 53 | PIN_B17 | PIN_B17 | PIN_B13 | PIN_B14 | BLULO | 54 | PIN_A17 | PIN_A17 | PIN_A13 | PIN_A14 | BLUHI | |
| 55 | PIN_B18 | PIN_B18 | PIN_A15 | PIN_D14 | HSYNC | 56 | PIN_A18 | PIN_A18 | PIN_A14 | PIN_C14 | VSYNC | |
| 57 | PIN_B19 | PIN_B19 | PIN_B15 | PIN_B16 | SDCS_N | 58 | PIN_A19 | PIN_A19 | PIN_C15 | PIN_A15 | SD_MOSI | |
| 59 | PIN_B20 | PIN_B20 | PIN_C16 | PIN_C16 | SD_SCK | 60 | PIN_A20 | PIN_A20 | PIN_B16 | PIN_C15 | SD_MISO | |
| 61 | GND | GND | GND | GND | GND | 62 | GND | GND | GND | GND | GND | |
| 63 | VIN | VIN | VIN | VIN | VIN | 64 | VIN | VIN | VIN | VIN | VIN |
J8 Pin Mapping Card to FPGA pins - Left connector
| U8 PIN | EP4CE15 | EP4CE55 | 5CEFA2 | 10C1006 | J1 | Function |
|---|---|---|---|---|---|---|
| 1 | GND | GND | GND | GND | N/C | |
| 2 | GND | GND | GND | GND | N/C | |
| 3 | 3.3V | 3.3V | 3.3V | 3.3V | J1-1 | |
| 4 | 3.3V | 3.3V | 3.3V | 3.3V | J1-2 | |
| 5 | GND | GND | GND | GND | N/C | |
| 6 | GND | GND | GND | GND | N/C | |
| 7 | PIN_AA13 | PIN_AA13 | PIN_AA14 | PIN_R9 | N/C | CPUE |
| 8 | PIN_AB13 | PIN_AB13 | PIN_AA13 | PIN_T9 | N/C | CPURES* |
| 9 | PIN_AA14 | PIN_AA14 | PIN_AA15 | PIN_R10 | J1-4 | CPUMX |
| 10 | PIN_AB14 | PIN_AB14 | PIN_AB15 | PIN_T10 | J1-3 | CPUCLK |
| 11 | PIN_AA15 | PIN_AA15 | PIN_Y15 | PIN_R11 | J1-6 | CPUBE |
| 12 | PIN_AB15 | PIN_AB15 | PIN_Y13 | PIN_T11 | J1-5 | CPUNMIB |
| 13 | PIN_AA16 | PIN_AA16 | PIN_AB18 | PIN_R12 | J1-8 | CPURWB |
| 14 | PIN_AB16 | PIN_AB16 | PIN_AB17 | PIN_T12 | J1-7 | CPUIRQB |
| 15 | PIN_AA17 | PIN_AA17 | PIN_Y7 | PIN_N9 | J1-10 | CPUVDA |
| 16 | PIN_AB17 | PIN_AB17 | PIN_Y16 | PIN_M9 | J1-9 | CPUABORTB |
| 17 | PIN_AA18 | PIN_AA18 | PIN_AA18 | PIN_M10 | J1-12 | CPUVPA |
| 18 | PIN_AB18 | PIN_AB18 | PIN_AA17 | PIN_P9 | J1-11 | CPURDY |
| 19 | PIN_AA19 | PIN_AA19 | PIN_AA20 | PIN_P11 | J1-14 | CPUVPB |
| 20 | PIN_AB19 | PIN_AB19 | PIN_AA19 | PIN_N11 | J1-13 | CPUMLB |
| 21 | PIN_AA20 | PIN_AA20 | PIN_Y20 | PIN_R13 | I1-16 | |
| 22 | PIN_AB20 | PIN_AB20 | PIN_Y19 | PIN_T13 | J1-15 | |
| 23 | PIN_Y22 | PIN_Y22 | PIN_AB21 | PIN_T15 | J1-18 | |
| 24 | PIN_Y21 | PIN_Y21 | PIN_AB20 | PIN_T14 | J1-17 | |
| 25 | PIN_W22 | PIN_W22 | PIN_AA22 | PIN_N12 | J1-20 | |
| 26 | PIN_W21 | PIN_W21 | PIN_AB22 | PIN_M11 | J1-19 | |
| 27 | PIN_V22 | PIN_V22 | PIN_W22 | PIN_R14 | J1-22 | |
| 28 | PIN_V21 | PIN_V21 | PIN_Y22 | PIN_N13 | J1-21 | |
| 29 | PIN_U22 | PIN_U22 | PIN_Y21 | PIN_N14 | J1-24 | |
| 30 | PIN_U21 | PIN_U21 | PIN_W21 | PIN_P14 | J1-23 | |
| 31 | PIN_R22 | PIN_R22 | PIN_U22 | PIN_P16 | J1-26 | |
| 32 | PIN_R21 | PIN_R21 | PIN_V21 | PIN_R16 | J1-25 | |
| 33 | PIN_P22 | PIN_P22 | PIN_V20 | PIN_N16 | J1-28 | |
| 34 | PIN_P21 | PIN_P21 | PIN_W19 | PIN_N15 | J1-27 | |
| 35 | PIN_N22 | PIN_N22 | PIN_U21 | PIN_M16 | J1-30 | |
| 36 | PIN_N21 | PIN_N21 | PIN_U20 | PIN_M15 | J1-29 | |
| 37 | PIN_M22 | PIN_M22 | PIN_R22 | PIN_L16 | J1-32 | |
| 38 | PIN_M21 | PIN_M21 | PIN_T22 | PIN_L15 | J1-31 | |
| 39 | PIN_L22 | PIN_L22 | PIN_P22 | PIN_P15 | J1-34 | |
| 40 | PIN_L21 | PIN_L21 | PIN_R21 | PIN_M12 | J1-33 | |
| 41 | PIN_K22 | PIN_K22 | PIN_T20 | PIN_L14 | J1-36 | |
| 42 | PIN_K21 | PIN_K21 | PIN_T19 | PIN_L13 | J1-35 | |
| 43 | PIN_J22 | PIN_J22 | PIN_P16 | PIN_K16 | J1-38 | |
| 44 | PIN_J21 | PIN_J21 | PIN_P17 | PIN_K15 | J1-37 | |
| 45 | PIN_H22 | PIN_H22 | PIN_N20 | PIN_K12 | J1-40 | |
| 46 | PIN_H21 | PIN_H21 | PIN_N21 | PIN_J12 | J1-39 | |
| 47 | PIN_F22 | PIN_F22 | PIN_M21 | PIN_J14 | J1-42 | |
| 48 | PIN_F21 | PIN_F21 | PIN_M20 | PIN_J13 | J1-41 | |
| 49 | PIN_E22 | PIN_E22 | PIN_M18 | PIN_K11 | J1-44 | |
| 50 | PIN_E21 | PIN_E21 | PIN_N19 | PIN_J11 | J1-43 | |
| 51 | PIN_D22 | PIN_D22 | PIN_L18 | PIN_G11 | J1-46 | |
| 52 | PIN_D21 | PIN_D21 | PIN_L19 | PIN_F11 | J1-45 | |
| 53 | PIN_C22 | PIN_C22 | PIN_M22 | PIN_F13 | J1-48 | |
| 54 | PIN_C21 | PIN_C21 | PIN_L22 | PIN_F14 | J1-47 | |
| 55 | PIN_B22 | PIN_B22 | PIN_L17 | PIN_F10 | N/C | |
| 56 | PIN_B21 | PIN_B21 | PIN_K17 | PIN_F9 | N/C | |
| 57 | PIN_N20 | PIN_N20 | PIN_K22 | PIN_E16 | N/C | |
| 58 | PIN_N19 | PIN_N19 | PIN_K21 | PIN_E15 | N/C | |
| 59 | PIN_M20 | PIN_M20 | PIN_M16 | PIN_D16 | N/C | |
| 60 | PIN_M19 | PIN_M19 | PIN_N16 | PIN_D15 | N/C | |
| 61 | GND | GND | GND | GND | J1-50 | |
| 62 | GND | GND | GND | GND | J1-49 | |
| 63 | VIN | VIN | VIN | VIN | J1-50 | |
| 64 | VIN | VIN | VIN | VIN | J1-50 |
P1 - VGA
- DB-15HD connector
- 2:2:2 R:G:B
P2 - PS/2 Keyboard
- Purple DIN-6 for PS/2 keyboard
P4 - SD Card
Mechanicals
MultiComp On RETRO-65C816 VHDL Code
References/Notes
- On the usefulness of 65816 as a 65C02 alternative
- Helpful timing information
...potential for data bus contention during Ø2 low. My solution was two-fold: use VDA and VPA to qualify chip selects, and qualify read-accesses with Ø2. The former assures that an addressed device will not respond to selection until the address bus is truly valid—invalid bus states may occur during the execution of some instructions. The latter assures that a selected device will not drive the data bus when the '816 is presenting A16-A23 on it. This solution doesn't totally eliminate the risk of contention but greatly narrows the window of opportunity for it. The need for more stringent qualifying of D0-D7 would depend on the peripheral silicon on the bus. In the case of POC and the Ø2 rate I'm using (12.5 MHz maximum), everything gets off the data bus before the '816 starts to drive it with the bank address. That would not be the case if I were to increase Ø2 to 20 MHz, however. Floating the buses with BE creates the odd situation where no valid address exists on A0-A15, which I daresay could cause a device to be selected solely because of a residual charge in bus capacitance. Also, BE floats the RWB signal*, which may trip up other logic that is dependent on RWB always being driven to one state or the other. The most fool-proof solution is the use of a data bus transceiver as you suggested, which is a straightforward method (74AC245 or 74AHC245 recommended if Ø2 will exceed 8 MHz).
Revision History
Rev 2
- Fixed W65C816 footprint
- Bigger footprint
- Moved around a lot of tracks to remove ground trace and use ground plane
Rev 1
- W65C816 footprint is too small for part
- Used TQFP footprint but part is clearly too big
- Datasheet does not indicate package detail
- 0.8mm pitch was OK
- Works well as RETRO-EP4CE15 replacement
- PS/2 @5V is good
Videos
- 65C816 Computer 27 Videos Series - Adrien Kohlbecker
- Lot of detail on 65C816 hardware
