Difference between revisions of "PDP-8 Front Panel"
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* [https://www.amazon.com/PDP-8-Class-Project-Resoling-Machine-ebook/dp/B07KY5RCJ7/ The PDP-8 Class Project -or- Resoling an Old Machine by Tom Almy] - Amazon link (Kindle e-boot or paper) | * [https://www.amazon.com/PDP-8-Class-Project-Resoling-Machine-ebook/dp/B07KY5RCJ7/ The PDP-8 Class Project -or- Resoling an Old Machine by Tom Almy] - Amazon link (Kindle e-boot or paper) | ||
* [https://github.com/douggilliland/Retro-Computers/tree/master/PDP-8/PDP8_Book(Almy) PDP-8 PFGA Design] - GitHub repo | * [https://github.com/douggilliland/Retro-Computers/tree/master/PDP-8/PDP8_Book(Almy) PDP-8 PFGA Design] - GitHub repo | ||
+ | ** [https://github.com/douggilliland/Retro-Computers/tree/master/PDP-8/PDP8_Book(Almy)/PDP8_VDU_FrPnl PDP-8 with Front Panel and VDU] | ||
== J1 Connector == | == J1 Connector == |
Revision as of 11:38, 22 May 2021
Contents
Features
- 50 pin connector
- 2x25 Pinout matches RETRO-EP4CE15 Card pins
- 12 Value LEDs (DB0-11) - octal format
- Display options: Program Counter (PC), Memory Address, Memory Data, Accumulator
- 12 Load Value Slide Switches (SL0-11) - octal format
- Enter values: PC, Memory Address, Memory Data, Accumulator
- LNK - Link value slide switch
- DISP - Display 12 Value LEDs select pushbutton
- Cycles between LEDs displaying PC, Memory Address, Memory Data, Accumulator
- Pushbutton Switches
- STEP pushbutton - Increment PC
- LDPC pushbutton - Load PC from Value Slide Switches
- DEP pushbutton - Store value from Value Slide Switches to memory
- LDA pushbutton - Store value from Value Slide Switches to Accumulator
- RES - Reset pushbutton - Resets CPU
- PB1 - spare pushbutton
- 4 DISP LEDs - Cycle between 12 LEDs source with DISP pushbutton
- PC - 12 LEDs display Program Counter value
- MADR - 12 LEDs display Memory Address value
- MD - 12 LEDs display Memory Data value
- AC - 12 LEDs display Accumulator value
- LINK LED - Displays Link value
- RUN LED - Running program
- RUN/HALT slide switch
- PWR - Power LED
- 95x95mm form factor
- (4) 6-32 mounting holes
PDP-8 FPGA Design
- The PDP-8 Class Project -or- Resoling an Old Machine by Tom Almy - Amazon link (Kindle e-boot or paper)
- PDP-8 PFGA Design - GitHub repo
J1 Connector
- Extra power and ground pins (not on RETRO-EP4CE15 Card)
- Pins 3,4 = GND
- Pins 5-8 = VCC
- Pin 9 = N/C
J1 to RETRO-EP4CE15 Pin Mapping
Real PDP-8/F Front Panel
Pin List
set_global_assignment -name FAMILY "Cyclone IV E" set_global_assignment -name DEVICE EP4CE15F23C8 set_global_assignment -name TOP_LEVEL_ENTITY pdp8 set_global_assignment -name ORIGINAL_QUARTUS_VERSION 18.1.0 set_global_assignment -name PROJECT_CREATION_TIME_DATE "13:56:19 MARCH 15, 2021" set_global_assignment -name LAST_QUARTUS_VERSION "20.1.0 Lite Edition" set_global_assignment -name PROJECT_OUTPUT_DIRECTORY output_files set_global_assignment -name MIN_CORE_JUNCTION_TEMP 0 set_global_assignment -name MAX_CORE_JUNCTION_TEMP 85 set_global_assignment -name ERROR_CHECK_FREQUENCY_DIVISOR 1 set_global_assignment -name NOMINAL_CORE_SUPPLY_VOLTAGE 1.2V set_global_assignment -name PARTITION_NETLIST_TYPE SOURCE -section_id Top set_global_assignment -name PARTITION_FITTER_PRESERVATION_LEVEL PLACEMENT_AND_ROUTING -section_id Top set_global_assignment -name PARTITION_COLOR 16764057 -section_id Top set_global_assignment -name POWER_PRESET_COOLING_SOLUTION "23 MM HEAT SINK WITH 200 LFPM AIRFLOW" set_global_assignment -name POWER_BOARD_THERMAL_MODEL "NONE (CONSERVATIVE)" set_global_assignment -name TIMING_ANALYZER_MULTICORNER_ANALYSIS ON set_global_assignment -name SMART_RECOMPILE ON set_global_assignment -name PROJECT_IP_REGENERATION_POLICY ALWAYS_REGENERATE_IP set_global_assignment -name STRATIX_DEVICE_IO_STANDARD "3.3-V LVTTL" # Clock, reset button set_location_assignment PIN_T2 -to clk set_location_assignment PIN_K22 -to btnCpuReset set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to btnCpuReset # Run Switch/LED set_location_assignment PIN_H22 -to runSwitch set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to runSwitch set_location_assignment PIN_F21 -to runLED # Serial set_location_assignment PIN_B13 -to RsRx set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to RsRx set_location_assignment PIN_B10 -to RsTx # PS/2 set_location_assignment PIN_R1 -to io_ps2Clk set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to io_ps2Clk set_location_assignment PIN_R2 -to io_ps2Data set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to io_ps2Data # VGA set_location_assignment PIN_A17 -to o_vid_blu[1] set_location_assignment PIN_B17 -to o_vid_blu[0] set_location_assignment PIN_A16 -to o_vid_grn[1] set_location_assignment PIN_B16 -to o_vid_grn[0] set_location_assignment PIN_A15 -to o_vid_red[1] set_location_assignment PIN_B15 -to o_vid_red[0] set_location_assignment PIN_B18 -to o_vid_hSync set_location_assignment PIN_A18 -to o_vid_vSync # 12 Slide switches set_location_assignment PIN_AB14 -to sw[0] set_location_assignment PIN_AB16 -to sw[1] set_location_assignment PIN_AB18 -to sw[2] set_location_assignment PIN_AB19 -to sw[3] set_location_assignment PIN_AA20 -to sw[4] set_location_assignment PIN_W21 -to sw[5] set_location_assignment PIN_V22 -to sw[6] set_location_assignment PIN_U22 -to sw[7] set_location_assignment PIN_R22 -to sw[8] set_location_assignment PIN_N22 -to sw[9] set_location_assignment PIN_M22 -to sw[10] set_location_assignment PIN_L22 -to sw[11] # 12 LEDs set_location_assignment PIN_J21 -to dispLEDs[11] set_location_assignment PIN_L21 -to dispLEDs[10] set_location_assignment PIN_M21 -to dispLEDs[9] set_location_assignment PIN_N21 -to dispLEDs[8] set_location_assignment PIN_P21 -to dispLEDs[7] set_location_assignment PIN_U21 -to dispLEDs[6] set_location_assignment PIN_W22 -to dispLEDs[5] set_location_assignment PIN_Y21 -to dispLEDs[4] set_location_assignment PIN_AA19 -to dispLEDs[3] set_location_assignment PIN_AA18 -to dispLEDs[2] set_location_assignment PIN_AA16 -to dispLEDs[1] set_location_assignment PIN_AA14 -to dispLEDs[0] # Status/Operation LEDs set_location_assignment PIN_K21 -to linkLED set_location_assignment PIN_AA17 -to dispMDLED set_location_assignment PIN_Y22 -to dispMALED set_location_assignment PIN_AA15 -to dispPCLED set_location_assignment PIN_R21 -to dispACLED set_location_assignment PIN_H21 -to lnkSwitch # Pushbuttons set_location_assignment PIN_AB17 -to stepPB set_location_assignment PIN_V21 -to depPB set_location_assignment PIN_AB20 -to ldPCPB set_location_assignment PIN_P22 -to ldACPB set_location_assignment PIN_AB15 -to dispPB