I was posting about the 8085 System Design Kit in may, but now i’ve got one!
I found one online, it is a very clean almost like its never been used version!
More follows!
More info at http://www.bitsavers.org/components/intel/8085/
SDK-85 in 2022
Category Archives: Computer
Energy bill and ledserver
Having a lot of devices and running a Lab wil use a lot of energy. Now with the energy crisis in Europe, i had to take a closer look at whats using power in my house.
I notished some weird usage patterns while measuring.
I’m using a few shelly power plugs, to measure devices and powerstrips.
With these devices you can control devices connected to it.
On/Off/Timer etcetera.
It wil measure the power usage in watts, and it even got a temperature sensor.
I like the fact that it perfectly integrates into your home automation using an extensive API.
curl commands to controll, and even MQTT messaging. Intergrating in Home Assistant is a breeze.
So i was monitoring a bunch of stuff using Nodered/Grafana/Homeassistant and saw some recurring usage.
But being always late to check things, i made use of my ledserver i’ve build a long time ago.
This ledserver consists of a Raspberry Pi Zero, with a led string and a API written in python.
Below is autostarted on the Raspberry
( I made this ledserver for work, it showed the status of servers and services. Beside that every colleage had a range which he could use for his own scripts. I made some little bash script templates to have led funtions standard in your bash profile.
#!/usr/bin/python
# apt-get install python-flask
#
import Adafruit_WS2801
import Adafruit_GPIO.SPI as SPI
import struct
from flask import Flask, render_template, request
app = Flask(__name__)
PIXEL_COUNT = 32
SPI_PORT = 0
SPI_DEVICE = 0
pixels = Adafruit_WS2801.WS2801Pixels(PIXEL_COUNT, spi=SPI.SpiDev(SPI_PORT, SPI_DEVICE))
pixels.clear()
pixels.show()
@app.route("/led/<deviceName>/<color>")
def action(deviceName, color):
if deviceName == 'reset':
print ("reset")
pixels.clear()
print (deviceName)
led = int(deviceName)
s = color
r = int(s[ :2], 16)
b = int(s[2:4], 16)
g = int(s[4: ], 16)
pixels.set_pixel_rgb(led, r,g,b)
pixels.show()
templateData = {
'rled' : r,
'bled' : b,
'gled' : g,
'deviceName' : deviceName,
}
return render_template('index.html', **templateData)
@app.route("/control/<controlcommand>")
def actioncommand(controlcommand):
if controlcommand == 'clear':
print("clear")
pixels.clear()
pixels.show()
templateData = {
'controlcommand' : controlcommand,
}
return render_template('index.html', **templateData)
@app.route("/range/<start>/<stop>/<color>")
def rangecommand(start,stop,color):
s = color
r = int(s[ :2], 16)
b = int(s[2:4], 16)
g = int(s[4: ], 16)
startled = int(start)
stopled = int(stop)
while (startled < stopled):
pixels.set_pixel_rgb(startled, r,g,b)
startled=startled + 1
pixels.show()
templateData = {
'rangecommand' : rangecommand,
}
return render_template('index.html', **templateData)
if __name__ == "__main__":
app.run(host='0.0.0.0', port=8080, debug=True)
Now you can control the leds with a simple curl command:
curl http://ledserver:8080/range/startled/endled/colorinrgb
curl http://ledserver:8080/led/lednumber/colorinrgb
curl http://ledserver:8080/control/clear
So today i made a little script to show power usage.
I’m reading the current power usage from a LS120 Youless
Youless LS120 device, which you can connect to your P1 connector.
With below bash script i’m reading the webinterface and update the ledstring.
I was using this ledserver for general notification usage. Below a 2 minute hack ..
#!/bin/bash
while true; do
number=$(echo $(curl -s http://youlessip/a | grep Watt | head -1 | awk '{ print $1 }') / 100 | bc)
curl -s http://ledserver:8080/control/clear
curl -s http://ledserver:8080/range/00/$number/010101
sleep 10
done
3DMouse and blender
UPDATE: 2022-09-29
Yesterday i got two 3DConnexion 3D CAD mouses (mice) from my friend Vincent. While we where fixing his Mikrotik network i got to play with these cool devices.
I always wanted one of those, but they are quite expensive
First i tried to install the Software from 3DConnexion. It kindda worked but needed some workarounds and still wasn’t okay.
Downloaded 3dxware-linux-v1-8-0.x86_64.tar.gz (Maybe this version is TOO new, SpacePilot i a little ouder)
there is a install-3dxunix.sh, but it was made for Suse/Redhat
This program needed motif .. and a lot of libraries (libmotif/libxm)
After that some fonts xfonts-100dpi xfonts-75dpi
workaround was starting by
sudo /etc/3DxWare/daemon/3dxsvr -userName ${USER} -d usb
After that the demo program worked perfectly … but Blender didn’t
After some tinkering it work a little, it was far to sensitive, and was all over the place.
Luckily i found a opensource replacement. https://spacenav.sourceforge.net/
git cloned the package, then i notished .. there is a precompiled version for ubuntu!
apt-get install spacenavd .. start the service .. and go!
i cloned the test demos (libspnav) and compiled those test programs.
apt-get install libglu1-mesa-dev git clone https://github.com/FreeSpacenav/libspnav.git cd libspnav ./configure make ... fly is a nice little test program
So lets start blender
This wil speedup modeling, and for sure sculpting !
Some settings which worked for me .. let the tweaking begin!
UPDATE: 2022-09-29
I removed the version in the apt repository, and installed everything from git. Now i have a cool configure tool
Challenged myself into programming a photo quiz
Got bored, and challenged myself …
How about a quess the picture from our photo collection??
(123580 photos .. )
So i show a random picture, and when i press ESC it will show some information about the picture …
Quess the year and the event
Well i gave myself 15 minutes to program something ..
I was watching a tv show meanwhile .. but i managed to come up with this …
This script is showing a picture, when you press ESC it wil show some details.After that it will select another random picture.
Improvements : reading tags and other metadata from my photo database, to give more information.
#!/bin/bash
while true ; do
shuf -n 1 allpix > /tmp/randompix
pix=$(cat /tmp/randompix | cut -f2 -d\> | cut -f1 -d\<)
dir=$(cat /tmp/randompix | cut -f4 -d\> | cut -f1 -d\< |cut -f3 -d\; | sed 's#\\#/#g')
displaypath=/mnt/${dir}/${pix}
info=$(cat /tmp/randompix | rev | cut -f-4 -d\\ | rev | cut -f1 -d \<)
convert -background black -fill white -size 1920x1080 -pointsize 24 label:"$info" info.jpg
pqiv -i --fullscreen "$displaypath"
pqiv -i --fullscreen info.jpg
done
Which gave me … this
Welllll .. it toke 20 minutes .. so i lost
(Must have been the wine)
PC Diagnostics Card
Tested my MSDOS XT machine using a pc diagnostics card.
But i could not find much information about this card.
Anyone recognise this one?
Kdenlive and credit scroller
For a video project iḿ working on, i needed a vertical credit scroller.
I’ve put together a little howto.
Tools used:
- OBS – Recording the howto
- Kdenlive – generating the Credit scroller, and recording voiceover howto clip
- Vlc
And this is the result
IRQ redirect for other programs
I’ve got a ROM in my 6502 which can load programs at $0200.
When running own programs i want to use IRQ’s, but my rom is also using IRQ routines.
So i was wondering if i could ‘hijack’ this IRQ for own program purposes.
So i’ve altered the rom to use a vector in userspace.
- CPU starts, getting vector from FFFC
- Goto $8000 main ROM program
- Setting a jmp routine on zero page $F0
- 4C C9 FF
- 4C C9 FF ; second time, first one will redirect
- Running my program on $0200
- Change first jmp C9 FF to my own IRQ part
- Changed jmp vectors
- 4C 6E 02 ; jmp $026E (myprg)
- 4C C9 FF ; jmp $FFC9 (rom)
- Run rest of program
All seems fine and dandy … buzzer is sounding, but no blinky leds.
When flashing the rom with only my program, everything works ..
So whats going on? .. anyone?
00000000 78 a9 6e 85 f1 a9 02 85 f2 58 a9 ff 8d 03 50 8d |x.n......X....P.| ; sei , lda #$6e, store $f1, lda #$02, store $f2 - so address $026e 00000010 02 50 a9 00 8d 01 50 8d 00 50 85 04 20 45 02 a9 |.P....P..P.. E..| 00000020 77 8d 04 50 a9 07 8d 05 50 20 2f 02 4c 29 02 38 |w..P....P /.L).8| 00000030 a5 00 e5 04 c9 19 90 0c a9 40 4d 00 50 8d 00 50 |.........@M.P..P| 00000040 a5 00 85 04 60 a9 00 85 00 85 01 85 02 85 03 a9 |....`...........| 00000050 c0 8d 0b 50 a9 a0 8d 0e 50 a9 0e 8d 08 50 a9 27 |...P....P....P.'| 00000060 8d 09 50 a9 00 8d 04 50 8d 05 50 58 60 40 48 a9 |..P....P..PX`@H.| ; at $6e opcode 48 (pha) 00000070 0e 8d 08 50 a9 27 8d 09 50 e6 00 d0 0a e6 01 d0 |...P.'..P.......| 00000080 06 e6 02 d0 02 e6 03 68 4c f3 00 |.......hL..|
ROM parts
MYIRQ = $F0 ; Own IRQ vector <=================== my additions/alterations
; Below definitions for VIA 1 my loadable program uses VIA 2
PORTB = $6000 ; VIA port B
PORTA = $6001 ; VIA port A
DDRB = $6002 ; Data Direction Register B
DDRA = $6003 ; Data Direction Register A
-------------8<------- snip
PROGRAM_LOCATION = $0200 ; memory location for user programs
.org $8000
main: ; boot routine, first thing loaded
ldx #$ff ; initialize the stackpointer with 0xff
txs
; ISR redirect code <=================== my additions/alterations
sei
lda #$4C
sta MYIRQ
sta MYIRQ + 3
lda #<ISR
sta MYIRQ + 1
sta MYIRQ + 4
lda #>ISR
sta MYIRQ + 2
sta MYIRQ + 5
cli
; End ISR redirect <=================== till here
; below this the standard rom routines
-------------8<------- snip
.org $FFC9 ; as close as possible to the ROM's end
ISR: <====================== Whole ISR not my code
CURRENT_RAM_ADDRESS = Z0 ; a RAM address handle for indirect writing
pha
tya
pha
lda ISR_FIRST_RUN ; check whether we are called for the first time
bne .write_data ; if not, just continue writing
lda #1 ; otherwise set the first time marker
sta ISR_FIRST_RUN ; and return from the interrupt
jmp .doneisr
.write_data:
lda #$01 ; progressing state of loading operation
sta LOADING_STATE ; so program_ram routine knows, data's still flowing
lda PORTB ; load serial data byte
ldy #0
sta (CURRENT_RAM_ADDRESS),Y ; store byte at current RAM location
; increase the 16bit RAM location
inc CURRENT_RAM_ADDRESS_L
bne .doneisr
inc CURRENT_RAM_ADDRESS_H
.doneisr
pla ; restore Y
tay
pla ; restore A
rti
.org $fffc
.word main ; Main ROM program
.word MYIRQ ; Redirect to OWN irq vector <=================== my additions/alterations
RAM Program
; Second VIA stuff
PORTB = $5000
PORTA = $5001
DDRB = $5002
DDRA = $5003
;------------------8<-------------
; Vector pointer on zero page
MYIRQ = $F0
ticks = $00 ; 4 Bytes
toggle_time = $04 ; 1 Byte
.org $0200
start:
; IRQ REDIRECT
sei ; irq masked
lda #<irq ; get low byte IRQ routine address
sta MYIRQ + 1 ; store at $F1
lda #>irq ; get high part of address
sta MYIRQ + 2 ; store at $F2
cli ; irq enabled
; IRQ END REDIRECT
; init of program part
lda #%11111111
sta DDRA
sta DDRB
lda #$00
sta PORTA
sta PORTB
sta toggle_time
jsr init_timer
lda #$77
sta T1CL
lda #$07
sta T1CH
loop: ; loop
jsr update_led ; update led routine
jmp loop
update_led:
sec
lda ticks
sbc toggle_time
cmp #25
bcc exit_update_led
; Toggle led
lda #%01000000
eor PORTB
sta PORTB
lda ticks
sta toggle_time
exit_update_led:
rts
;-----------------------------8<------------- snip
irq:
pha
lda #$0e
sta T2CL
lda #$27
sta T2CH
inc ticks
bne end_irq
inc ticks + 1
bne end_irq
inc ticks + 2
bne end_irq
inc ticks + 3
end_irq:
pla
jmp MYIRQ + 3 ; jmp to vector which points to ROM routine ; should be $FFC9
6502 update
- New amplifier part using a LM386
- Buzzer and led on VIA 2, blinky and sound timed by the internal timers of the 6522
- ACIA testing still going on, writing software
- Mini matrix keyboard removed, and used the temporary cursor buttons for the test with a rom which allows for a 8bits upload method using a arduino and the 6522. (I’m working on the big keyboard)
Work in progress code
PORT2B = $5000 ; VIA PORTB PORT2A = $5001 ; VIA PORTA DDR2B = $5002 ; Data direction register DDR2A = $5003 ; Data direction register PORTB = $6000 ; display PORTA = $6001 ; control display + matrix keyboard DDRB = $6002 ; data direction register DDRA = $6003 ; data direction register SID = $7000 ; sid base address E = %10000000 ; enable bit RW = %01000000 ; RW bit RS = %00100000 ; Register Select bit HOME = %00000010 ; VIA PORTB HOME command DADDR = %00010000 ; VIA DADDRESS LINENO = $0200 ; temp address linenumber (move to other location) NEXTLINE = 40 ; 2x16 Chars but internally 40 .org $8000 reset: ldx #$ff txs ; reset stack ; ################################################### ; # DISPLAY CONTROL # ; ################################################### ; VIA Setup lda #%11111111 ; Set all pins on port B to output sta DDRB lda #%11100000 ; Set top 3 pins on port A to output sta DDRA ; DISPLAY Setup lda #%00111000 ; Set 8-bit mode; 2-line display; 5x8 font jsr lcd_instruction lda #%00001110 ; Display on; cursor on; blink off jsr lcd_instruction lda #%00000110 ; Increment and shift cursor; don't shift display jsr lcd_instruction lda #$00000001 ; Clear display jsr lcd_instruction ; ################################################### ; # PRINT MESSAGE LINE NO 0 # ; ################################################### lda #0 ; set line number sta LINENO ; store for subroutine jsr gotoline ; move cursor ldx #0 ; message index pointer print: lda message0,x ; start of message beq nextprint ; stop when null in message (asciiz <- Zero padded) jsr print_char ; print char inx ; incr index jmp print ; resume print ; ################################################### ; # PRINT MESSAGE LINE NO 1 # ; ################################################### nextprint: lda #1 ; set line number sta LINENO ; store jsr gotoline ldx #0 ; index pointer print2: lda message1,x ; absolute address message + x in A beq sidsound ; if x is 0, end of message jsr print_char ; jump subroutine inx ; increment x jmp print2 ; loop print2 ; ################################################### ; # SID SOUND # ; ################################################### sidsound: lda #0 sta SID+$5 ; attack/decay duration lda #250 sta SID+$6 ; sustain level/release duration lda #$95 ; frequency voice 1 low byte sta SID+$0 lda #$44 ; frequency voice 1 high byte sta SID+$1 lda #%00100001 ; sawtooth + gate sta SID+$4 ; control register voice 1 lda #$0f ; filter mode and volume (bits 3-0 main volume) sta SID+$18 ; filter mode and volume ; ################################################### ; # 2ND VIA # ; ################################################### lda #%11111111 ; set port A output sta DDR2A lda #%11111111 ; all ones! sta PORT2A ; ################################################### lda #%11111111 ; set port A output sta DDR2A lda #%11111111 ; all ones! sta PORT2A ; ################################################### ; # MAIN PROGRAM LOOP # ; ################################################### loop: jmp loop ; 1234567812345678 message0: .asciiz "VIA 1,2 SID TEST" message1: .asciiz " FASH 2022 " ; ################################################### ; # ONLY SUBROUTINES # ; ################################################### ; ################################################### ; # Subroutine gotoline # ; # Moves character placement position on display # ; # Needs : $LINENO ADDRESS # ; # Exit values : - # ; # Destroys registers: - # ; ################################################### gotoline: pha ; store a txa pha ; store x ldx LINENO lda #HOME ; cursor down jsr lcd_instruction lda #$80 nextline: ldx LINENO cpx #00 beq endnextlines loopline: adc #40 jsr lcd_instruction dex stx LINENO jmp nextline endnextlines: pla ; pop a tax ; a to x pla ; pop a rts ; ################################################### ; # LCD SUBROUTINES # ; ################################################### lcd_wait: pha lda #%00000000 ; Port B is input sta DDRB lcdbusy: lda #RW sta PORTA lda #(RW | E) sta PORTA lda PORTB and #%10000000 bne lcdbusy lda #RW sta PORTA lda #%11111111 ; Port B is output sta DDRB pla rts lcd_instruction: jsr lcd_wait sta PORTB lda #0 ; Clear RS/RW/E bits sta PORTA lda #E ; Set E bit to send instruction sta PORTA lda #0 ; Clear RS/RW/E bits sta PORTA rts print_char: jsr lcd_wait sta PORTB lda #RS ; Set RS; Clear RW/E bits sta PORTA lda #(RS | E) ; Set E bit to send instruction sta PORTA lda #RS ; Clear E bits sta PORTA rts nmi: rti irq: rti .org $fffa .word nmi .word reset .word irq ; .word $0000
Blender transparent animation for logo
First test to make a personalised logo for myself to use embedded on movies or in OBS streams.
Created a simple animation in Blender.
We need to export in RGBA (A for aplha), One of the supported video codex you can use is : Quicktime – QT rle.
Select this one, and make sure it’s RGBA and not RGB
Now i can use the exported video file in OBS for streaming.
I made the animation i a way that it can be looped.
(Don’t forget to set this option in OBS.)
Also useable in Kdenlive editor as watermark.
Android and devices in your neighbourhood
When i play around with Arduino’s which i have flashed and start with their own access points. It’s sometimes not clear which remote IP is connected.
Applications like Tasmota,Wled and Easyesp startup with their own Access Point, which you can use to connect to and configure them to your real accesspoint.
So you connect to this temporary AP, and want to remote access it with your phone’s browser. Not all apps (certainly not my apps) have a captive portal. Most won’t .. Which ip to use to connect?
Install JuiceSSH of you don’t have it .. it’s a must have really
Select quick connect – local device
Enter command “ip neigh”, It wil show devices connected to your android phone or which where broadcasting in your network-neighbourhood
Most of the times it also your default gw .. which can be found in settings. But above gives you more information.