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Chester-Gillon / Logsys_XILINX_Kintex-7_FPGA_PCIe_development_Board.md
Last active June 27, 2026 17:34
Logsys XILINX Kintex-7 FPGA PCIe development Board

0. Introduction

Contains notes about a Logsys XILINX Kintex-7 FPGA PCIe development Board

Logsys XILINX Kintex7 Kintex-7 FPGA PCIe development Board FOR PARTS OR REPAIR is the ebay listing which contained:

Doesn't show up the interface in the PCI device list ( should shoup as 0x10EE 0x7011 ) . Leds show activity .

Looking at the pictures in the listing was powered up in a PCI with JP1 set to JTAG for the configuration mode, so that might explain the lack of enumerating as a PCIe endpoint.

LOGSYS_Kintex7_FPGA_Board.pdf is a manual found, in Hungarian. Has schematics so should allow constraints to be determined.

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Chester-Gillon / XC7K480T_FPGA_development_Board_acceleration_Card_YPCB-00338-1P.md
Created June 17, 2026 16:49
Notes about XC7K480T FPGA development Board acceleration Card YPCB-00338-1P
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Chester-Gillon / Notes_about_XCKU5P_Board.md
Last active June 16, 2026 23:32
Notes about XCKU5P Board FPGA Core Board Onboard 128Mbit FLASH FMC QSFP28 100G Port PCIE3.0

0. Introduction

Contains notes about XCKU5P Board FPGA Core Board Onboard 128Mbit FLASH FMC QSFP28 100G Port PCIE3.0

The board picture above show the Micron DDR4 devices have a FBGA Code of D9WFM which is MT40A512M16LY-062E-IT-E which is a 8Gb component. The XCKU5P-FFVB676.pdf schematic gives the part number of U1 and U11 as MT40A512M16LY-062E-IT-E, which matches. The XCKU5P-FFVB676.rar contained a datasheet named MT40A512M16LY-062E ITE.pdf, but was actually for 4Gb components. For now, assume MT40A512M16LY-062E-IT-E is the correct DDR4 part

Read the Device DNA over JTAG and using AMD Device Lookup reports:

Package-PinFFVB676
DeviceXCKU5P
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Chester-Gillon / 10G_Ethernet_FPGA_IP_options.md
Created March 29, 2026 22:29
10G Ethernet FPGA IP options
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Chester-Gillon / MYD-CZUEV.md
Created March 1, 2026 16:06
MYD-CZUEV

How to import MYIR presets

home/mr_halfword/Documents/MPSOC2019.1_DVD_V1.1/01-Document/UserManual/English/MYD-CZU3EG-4EV Tutorial.pdf was created using Vivado 2019.1. The "4.1 Create a Block Design" section selects the Presets option on the "Re-customize IP" dialog to import the configuration for the MYC-CZU4EV module.

However, in Vivado 2020.1 the Presets options is not present on the dialog.

https://www.xilinx.com/support/answers/75467.html is 'Zynq UltraScale+ MPSoC, Vivado 2020.1 - Processing System "Presets" option temporarily removed'

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Chester-Gillon / ibv_generate_infiniband_test_load_results.md
Last active May 4, 2026 20:14
ibv_generate_infiniband_test_load results

0. ibv_generate_infiniband_test_load results

Notes about results of ibv_generate_infiniband_test_load.

1. ConnectX-4 Lx

Dual 10 GbE ports connected to a switch. AlmaLinux release 8.10 with Kernel 4.18.0-553.104.1.el8_10.x86_64.

1.1. RoCE v1

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Chester-Gillon / Notes_about_100G_Multirate_Ethernet_MAC_(MRMAC).md
Last active April 19, 2026 21:16
Notes about 100G Multirate Ethernet MAC (MRMAC)
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Chester-Gillon / Notes_about_QDMA_Subsystem_for_PCI_Express.md
Last active January 17, 2026 09:11
Notes about QDMA Subsystem for PCI Express

0. Introduction

This contains notes about the AMD QDMA Subsystem for PCI Express, based upon trying to write a VFIO based poll-mode driver for QDMA.

Have UltraScale+ and Versal AI Edge devices to try with QDMA, which support the soft QDMA. Don't have devices with the CPM4 nor CPM4 hard QDMA.

1. Documentation

  1. QDMA Subsystem for PCI Express Product Guide (PG302) gives the supported product families as "AMD UltraScale+™ , AMD Spartan™ UltraScale+™". For driver details https://github.com/Xilinx/dma_ip_drivers. The register reference file is https://download.amd.com/docnav/documents/ip_attachments/qdma-v5-1-register-map.zip.
  2. Versal Adaptive SoC DMA and Bridge Subsystem for PCI Express Product Guide (PG344) mentions both the XMDA and QDMA substems. The supported product family is "AMD Versal™ adaptive SoC"
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Chester-Gillon / AlmaLinux_10_install_on_Dell_Optiplex_XE4.md
Last active June 27, 2026 13:03
AlmaLinux 10 install on Dell Optiplex XE4

0. Introduction

Descibes notes about installing AlmaLinux 10.1 on a Dell Optiplex XE4 - see Notes about Milestone Husky IVO 350T Rev 3 reuse for notes about the PC which had been re-badged.

The processor is a 12th Gen Intel(R) Core(TM) i3-12100 CPU.

1. Initial install from AlmaLinux 10.0 live USB image

The initial state of the Dell Optiplex XE4 was:

  1. Windows 11 Pro installed on a 256 GB SSD M.2.
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Chester-Gillon / SD_card_write_protection.md
Last active December 24, 2025 22:28
SD card write protection

The following sequence is repeatible:

  1. Copy AlmaLinux-10.0-x86_64_v2-Live-GNOME.iso to a Micro SD card as per AlmaLinux 10 initial look. That is using a USB to Micro SD adapter which doesn't provide write protection, even when Micro SD -> Micro SD to SD adapter with the switch set to the lock position -> USB to SD adpater.
  2. Boot into Alma Linux 8 with the with the Micro SD present and writable. Verify the Micro SD contents against the source ISO file.
  3. Reboot and use the BIOS boot menu to boot from the Micro SD card and the media check passes.
  4. With a different PC booted into Windows 11 insert the Micro SD card in the USB adapter. Get some notifications from Windows about drive letters for the SD card content, but don't directly attempt to access the SD card contents.
  5. Reboot the PC and use the BIOS boot menu to boot from the Micro SD card and the media check fails at 4.8%.
  6. Comparing the Micro SD contents