View source for PDP-11 ON RETRO-EP4CE15

'''Work in Progress'''

[[File:RETROEP4CE15_REV4_P376-annotated-720px.jpg]]

== Build ==

* [[RETRO-EP4CE15]]
** Requires [[QM Tech Cyclone V FPGA Board]]
** Requires EP4CE55 Cyclone IV Card
* [https://pdp2011.sytse.net/wordpress/ PDP2011] by Sytse van Slooten
* [https://github.com/DavidJRichards/pdp2011/ David Richards PDP-11 Build on A-ESTF V2 EP4CE22 Board]
** [https://github.com/DavidJRichards/pdp2011/wiki Wiki]
** [https://github.com/DavidJRichards/pdp2011/wiki/A_ESTF A-ESTF Page]
* [https://wfjm.github.io/home/w11/inst/systems.html#h_os_kits System Images]

=== J1 - I/O Connector (5CEFA2F23 FPGA Card pin numbers) ===

[[File:J1_MAP_FPGA_PINS.PNG]]

* J1-50 = GND
* J1-49 = GND
* J1-48 = PIN_M22 = resetbtn
* J1-47 = PIN_L22 = sw_cont
* J1-46 = PIN_L18 = sw_halt
* J1-45 = PIN_L19 = tx2
* J1-44 = PIN_M18 = rx2
* J1-43 = PIN_N19 = rts2
* J1-42 = PIN_M21 = cts2
* J1-41 = PIN_M20 = led_run
* J1-40 = PIN_N20 = xu_sclk
* J1-39 = PIN_N21 = xu_mosi
* J1-38 = PIN_P16 = xu_miso
* J1-37 = PIN_P17 = xu_debug_tx
* J1-36 = PIN_T20 = xu_cs
* J1-35 = PIN_T19 = max7219_load
* J1-34 = PIN_P22 = max7219_data
* J1-33 = PIN_R21 = max7219_clock
* J1-1 = VCC
* J1-2 = VCC

== Configuration Switches/Jumpers/LEDs ==

=== J3 - Configuration Jumpers (5CEFA2F23 FPGA Card pin numbers) ===

[[File:J3-footprint.PNG]]

[[File:J3_MAP_FPGA_PINS.PNG]]

{| class="wikitable"
! Function
! DIP Switch
! FPGA Pin
|-
| '''rp boot'''
 (off=boot to debugger)
 (on=rp boot)
| 1
| PIN_L17
|-
| '''Buzzer'''
 (off=not buzz)
 (on=buzzes constantly)
| 2
| PIN_K17
|-
| '''rk boot'''
 (off=rk boot)
 (on=boot to debugger)
| 3
| PIN_K22
|-
| '''Swap console'''
 (off=vga console)
 (on=RS-232 console)
| 4
| PIN_K21
|-
|}

== Switches ==

* [[LEDS-SWITCHES]]

[[File:LEDS-SWITCHES_P1404-720px.jpg]]

{| class="wikitable"
! Function
! J10 Pin
! FPGA Pin
|-
| resetbtn
| SW9
| PIN_J16 
|-
| sw_halt 
| J10-30 
| PIN_N14 
|-
| sw_cont 
| J10-32 
| PIN_P15 
|-
| led_run
| D8
| PIN_T15 
|-
|}

== Serial Ports ==

=== P3 - USB-B B (5CEFA2F23 FPGA Card pin numbers) Serial Port ===

* On-board FT230X FTDI USB to Serial

[[File:RETROEP4CE15-Serial.PNG]]

* fpgaRx1 (in) = PIN_C11
** Needs weak pullup
*** set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to rxd1
* fpgaTx1 (out) = PIN_G10
* fpgaRts1 = U7-44 = PIN_F10
* fpgaCts1 = U7-46 = PIN_B11

=== I/O connector ===

* Second serial port on I/O connector
* rx2 (in) = PIN_
* tx2 (out) = PIN_
* rts2 (out) = PIN_
* cts2 (in) = PIN_

== External 8 Digit 7 segment MAX7219 LED ==

* PIN_L15 max7219_data J10-24
* PIN_N12 max7219_load J10-26
* PIN_N15 max7219_clock J10-28

== Resources ==

* [https://pdp2011.sytse.net/wordpress/ PDP2011] by Sytse van Slooten
* [https://github.com/DavidJRichards/pdp2011 David J Richards] - copied and adapted from pdp2011 by Sytse van Slooten
* [https://github.com/DavidJRichards/pdp2011/ David Richards PDP-11 Build]
** [https://github.com/DavidJRichards/pdp2011/wiki Wiki]
** [https://github.com/DavidJRichards/pdp2011/wiki/A_ESTF A-ESTF Page]
* [https://github.com/scottlbaker/PDP11-SOC Scott L Baker PDP11-SOC] - PDP-11/20 CPU + UART + Timer + I/O Ports coded in VHDL and implemented for the Lattice iCE40-hx8k dev board
* [http://bitsavers.org/bits/DEC/pdp11/ PDP-11 on BitSavers]
** [http://bitsavers.org/bits/DEC/pdp11/discimages/ Disk Images]
* [https://github.com/wfjm/w11 w11: PDP 11/70 CPU and SoC] - a PDP-11/70 CPU with memory management unit, but without floating point unit,
** [https://github.com/wfjm/w11/blob/master/doc/INSTALL_quickstart.md Quick start Guide]
** [https://wfjm.github.io/home/w11/inst/systems.html#h_os_kits OS Kits (Disk Images)]
* [https://github.com/wfjm/w11/blob/master/doc/w11a_os_guide.md#guide-to-run-operating-system-images-on-w11a-systems Guide to run operating system images on w11a systems]

== Pin List ==

<pre>
# Analysis & Synthesis Assignments
# ================================
set_global_assignment -name FAMILY "Cyclone V"
set_global_assignment -name TOP_LEVEL_ENTITY top
set_global_assignment -name EDA_DESIGN_ENTRY_SYNTHESIS_TOOL "Design Compiler"

# Fitter Assignments
# ==================
set_global_assignment -name DEVICE 5CEFA2F23I7
set_global_assignment -name STRATIX_DEVICE_IO_STANDARD "3.3-V LVTTL"
set_global_assignment -name CRC_ERROR_OPEN_DRAIN OFF
set_global_assignment -name CYCLONEII_RESERVE_NCEO_AFTER_CONFIGURATION "USE AS REGULAR IO"
set_global_assignment -name FORCE_CONFIGURATION_VCCIO ON

# Pin & Location Assignments
# ==========================

set_location_assignment PIN_M9 -to clkin

set_location_assignment PIN_M22 -to resetbtn
set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to resetbtn
set_location_assignment PIN_L22 -to sw_cont
set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to sw_cont
set_location_assignment PIN_L18 -to sw_halt
set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to sw_halt
set_location_assignment PIN_M20 -to led_run

set_location_assignment PIN_L17 -to switch[0]
set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to switch[0]
set_location_assignment PIN_K17 -to switch[1]
set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to switch[1]
set_location_assignment PIN_K22 -to switch[2]
set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to switch[2]
set_location_assignment PIN_K21 -to switch[3]
set_instance_assignment -name WEAK_PULL_UP_RESISTOR ON -to switch[3]

set_location_assignment PIN_AA2 -to ps2k_c
set_location_assignment PIN_AA1 -to ps2k_d

set_location_assignment PIN_A15 -to vgah
set_location_assignment PIN_A14 -to vgav
set_location_assignment PIN_A13 -to o_vgab[1]
set_location_assignment PIN_B13 -to o_vgab[0]
set_location_assignment PIN_C13 -to o_vgag[1]
set_location_assignment PIN_D13 -to o_vgag[0]
set_location_assignment PIN_D12 -to o_vgar[1]
set_location_assignment PIN_E12 -to o_vgar[0]

set_location_assignment PIN_Y9 -to dram_addr[12]
set_location_assignment PIN_T9 -to dram_addr[11]
set_location_assignment PIN_R6 -to dram_addr[10]
set_location_assignment PIN_W8 -to dram_addr[9]
set_location_assignment PIN_T8 -to dram_addr[8]
set_location_assignment PIN_U8 -to dram_addr[7]
set_location_assignment PIN_V6 -to dram_addr[6]
set_location_assignment PIN_U7 -to dram_addr[5]
set_location_assignment PIN_U6 -to dram_addr[4]
set_location_assignment PIN_N6 -to dram_addr[3]
set_location_assignment PIN_N8 -to dram_addr[2]
set_location_assignment PIN_P7 -to dram_addr[1]
set_location_assignment PIN_P8 -to dram_addr[0]
set_location_assignment PIN_P9 -to dram_ba_1
set_location_assignment PIN_T7 -to dram_ba_0
set_location_assignment PIN_AA7 -to dram_cas_n
set_location_assignment PIN_V9 -to dram_cke
set_location_assignment PIN_AB11 -to dram_clk
set_location_assignment PIN_AB5 -to dram_cs_n
set_location_assignment PIN_P12 -to dram_dq[15]
set_location_assignment PIN_R12 -to dram_dq[14]
set_location_assignment PIN_U12 -to dram_dq[13]
set_location_assignment PIN_R11 -to dram_dq[12]
set_location_assignment PIN_R10 -to dram_dq[11]
set_location_assignment PIN_U11 -to dram_dq[10]
set_location_assignment PIN_T10 -to dram_dq[9]
set_location_assignment PIN_U10 -to dram_dq[8]
set_location_assignment PIN_AA8 -to dram_dq[7]
set_location_assignment PIN_AB8 -to dram_dq[6]
set_location_assignment PIN_AA9 -to dram_dq[5]
set_location_assignment PIN_Y10 -to dram_dq[4]
set_location_assignment PIN_AB10 -to dram_dq[3]
set_location_assignment PIN_AA10 -to dram_dq[2]
set_location_assignment PIN_Y11 -to dram_dq[1]
set_location_assignment PIN_AA12 -to dram_dq[0]
set_location_assignment PIN_V10 -to dram_udqm
set_location_assignment PIN_AB7 -to dram_ldqm
set_location_assignment PIN_AB6 -to dram_ras_n
set_location_assignment PIN_W9 -to dram_we_n

set_location_assignment PIN_C11 -to tx1
set_location_assignment PIN_G10 -to rx1
set_location_assignment PIN_B11 -to cts1
set_location_assignment PIN_F10 -to rts1

set_location_assignment PIN_L19 -to tx2
set_location_assignment PIN_M18 -to rx2
set_location_assignment PIN_M21 -to cts2
set_location_assignment PIN_N19 -to rts2

set_location_assignment PIN_C16 -to sdcard_sclk
set_location_assignment PIN_B15 -to sdcard_cs
set_location_assignment PIN_B16 -to sdcard_miso
set_location_assignment PIN_C15 -to sdcard_mosi

set_location_assignment PIN_R21 -to max7219_clock
set_location_assignment PIN_P22 -to max7219_data
set_location_assignment PIN_T19 -to max7219_load

set_location_assignment PIN_T20 -to xu_cs
set_location_assignment PIN_P17 -to xu_debug_tx
set_location_assignment PIN_P16 -to xu_miso
set_location_assignment PIN_N21 -to xu_mosi
set_location_assignment PIN_N20 -to xu_sclk

</pre>