https://github.com/kitune-san/kf8253

8253-like programmable interval timer written in SystemVerilog
https://github.com/kitune-san/kf8253

8253 fpga interval-timer pc systemverilog timer

Last synced: 4 months ago
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8253-like programmable interval timer written in SystemVerilog

• Host: GitHub
• URL: https://github.com/kitune-san/kf8253
• Owner: kitune-san
• License: mit
• Created: 2020-07-28T14:30:07.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2023-11-14T14:56:34.000Z (over 2 years ago)
• Last Synced: 2025-06-16T05:45:47.658Z (12 months ago)
• Topics: 8253, fpga, interval-timer, pc, systemverilog, timer
• Language: SystemVerilog
• Homepage:
• Size: 58.6 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# KF8253 - 8253-like programmable interval timer written in SystemVerilog

## About

KF8253 is programmable interval timer like 8253.

## Differences from original

- Clock synchronization

- I/O ports is separated into input and output port

## Features

- 3 counters

- Count Binary or BCD

- Mode 0: Interrupt on Terminal Count

- Mode 1: Programmable One-Shot

- Mode 2: Rate Generator

- Mode 3: Square Wave Rate Generator

- Mode 4: Software Triggered Strobe

- Mode 5: Hardware Triggered Strobe

## Block

![KF8253_block](DOC/img/KF8253_block.png)