Search found 48 matches

by pancio
26 March 2021, 09:53 - Fri
Forum: Hardware Mods
Topic: A2I2C - I2C bus for Atari
Replies: 9
Views: 8270

Re: A2I2C - I2C bus for Atari

I analysed my project again according to additional information regarding specific timing (AN96040 - added to first post) and now I'm pretty sure that the interrupt signal may disturb data communication between PCF8584 and microcomputer subsystem. I'll cut /INT line from existing PCB (especially tha...
by pancio
25 March 2021, 14:12 - Thu
Forum: Hardware Mods
Topic: A2I2C - I2C bus for Atari
Replies: 9
Views: 8270

Re: A2I2C - I2C bus for Atari

Hi, Generally it's look very good... (KiCAD)? Actually I see one issue... please clarify if I'm wrong. You are using the same CLK signal for 6502 and PCF? If yes, PCF will not be capable for so quick operations at all. Nice address decoder but in case you have many shadow registers :-). Did you conn...
by pancio
23 March 2021, 06:43 - Tue
Forum: Hardware Mods
Topic: A2I2C - I2C bus for Atari
Replies: 9
Views: 8270

Re: A2I2C - I2C bus for Atari

Hi, I'm using MADS assembler as you guessed. The asterisk (*) with equ directive means that code started from i2cbuf should be placed in memory just here. It's dynamically allocation for i2cbuf. Another words, * is a pointer for memory address in the code stream. In case you have: ... 215 6115 00 le...
by pancio
21 March 2021, 22:28 - Sun
Forum: TASMOTA
Topic: SONOFF S55FR Waterproof Wi-Fi Socket under Tasmota
Replies: 0
Views: 133

SONOFF S55FR Waterproof Wi-Fi Socket under Tasmota

Hi, Today I'll show you how to prepare SONOFF S55FR Waterproof Wi-Fi Socket for Home Assistant under Tasmota environment. You may buy it on Banggood or Aliexpress, his price is abound 12$, so it's chip waterproof device in my opinion. socket0.jpeg Preparing to flash According to PCB variant which I ...
by pancio
07 March 2021, 15:32 - Sun
Forum: Hardware Mods
Topic: A2I2C - I2C bus for Atari
Replies: 9
Views: 8270

Re: A2I2C - I2C bus for Atari

Hi, My prototype works fine with one condition.. touching I2C bus not so fast :-) So if you planning use full PCF8584 features consider to use external clock (e.g. 12MHz) for it. I'm used PHI2 clock - it was mistake. For more details see page: http://radio86rk.pbworks.com/w/page/134476563/rk86-2018-...
by pancio
29 June 2020, 11:10 - Mon
Forum: TASMOTA
Topic: Storm Detector with Tasmota
Replies: 0
Views: 7401

Storm Detector with Tasmota

I need to equip my Home Assistant with storm detector so i found chip module GY-AS3935 made by CJMCU. It's very tiny but smart module with I2C and SPI interfaces. I Decide to use I2C with Wemos D1 mini under Tasmota. No more other staff was required... Prototype . storm_detector_prototype.jpg Actual...
by pancio
20 June 2020, 15:21 - Sat
Forum: Development
Topic: TL866 II Plus and Xgpro under Linux
Replies: 0
Views: 9067

TL866 II Plus and Xgpro under Linux

TL866 II Plus is the good quality, cheeap and power IC programmer which I'm using very often as best tool for any kind of FLASH devices. Of course it will useless under Windows so I decided to find solution for my favourite Linux Mint. Well, uncle Google find Reversatronics blog: https://reversatro...
by pancio
22 January 2020, 21:09 - Wed
Forum: Development
Topic: PALASM4 under Linux
Replies: 0
Views: 7758

PALASM4 under Linux

As said Wikidedia: PALASM is an early hardware description language, used to translate Boolean functions and state transition tables into a fuse map for use with Programmable Array Logic (PAL) devices introduced by Monolithic Memories, Inc. (MMI). The language was developed by John Birkner in the ea...
by pancio
24 August 2019, 21:33 - Sat
Forum: Hardware Mods
Topic: GLCD connected to Atari XE - the first project with VIAtari
Replies: 0
Views: 13547

GLCD connected to Atari XE - the first project with VIAtari

Done! The first project which is using VIAtari was made... I'm glad to present the first GLCD 162x64 connected to Atari: s1d15705blank.jpg s1d15705pcb.jpg In order to connect GLCD I used both parallel ports - PORTB is a data bus and PORTA is for control signals. Actually I used only 5 signals, so re...
by pancio
10 June 2019, 21:51 - Mon
Forum: Hardware Mods
Topic: VIAtariXE based on VIA 6522
Replies: 0
Views: 7535

VIAtariXE based on VIA 6522

Introduction Inspiration for this mode I found on Daryl's Computer Hobby Page . Daryl made Composite Video Text/Graphics Display based on ATMEGA8 and drive by VIA6522. This article will show how to build, assembly and connect VIA 6522 IC to Atari and use 2 additional 8-bit parallel ports and serial...