I was using zevv’s bucklespring way back since he was beta testing.
https://github.com/zevv/bucklespring
Also cool-retro-term, i used whenever i felt nostalgic.
But both at the same time, how much fun is that!
(Both newly installed on my laptop, which i had to reinstall, because i f*cked it up beyond repair. installing openxr stuff. OpenXR is an open, royalty-free standard for access to virtual reality and augmented reality platforms and devices. )
The ATF22V10 is a Programmable Logic Device. This means you can program the logic in the chip.
Internally it looks like a big matrix of connections which you can program to connect/disconnect from certain logic.
It has just a bunch of inputs/outputs
So if we want to have a 7 Segment decoder (you can easily buy a BCD decoder .. but these only work for displaying 0-9 and not 0-9A-F for displaying HEX numbers)
| Binary IN | 7 Segment decoded | Displays |
| D C B A | A B C D E F G | |
| 0 0 0 0 | 1 1 1 1 1 1 0 | 0 |
| 0 0 0 1 | 0 1 1 0 0 0 0 | 1 |
| 0 0 1 0 | 1 1 0 1 1 0 1 | 2 |
| 0 0 1 1 | 1 1 1 1 0 0 1 | 3 |
| 0 1 0 0 | 0 1 1 0 0 1 1 | 4 |
| 0 1 0 1 | 1 0 1 1 0 1 1 | 5 |
| 0 1 1 0 | 1 0 1 1 1 1 1 | 6 |
| 0 1 1 1 | 1 1 1 0 0 0 0 | 7 |
| 1 0 0 0 | 1 1 1 1 1 1 1 | 8 |
| 1 0 0 1 | 1 1 1 1 0 1 1 | 9 |
| 1 0 1 0 | 1 1 1 0 1 1 1 | A |
| 1 0 1 1 | 0 0 1 1 1 1 1 | B |
| 1 1 0 0 | 1 0 0 1 1 1 0 | C |
| 1 1 0 1 | 0 1 1 1 1 0 1 | D |
| 1 1 1 0 | 1 0 0 1 1 1 1 | E |
| 1 1 1 1 | 1 0 0 0 1 1 1 | F |
Now we see that segment A is 1 in the case of (0,2,3,5,6,7,8,9,A,C,E,F)
When programming the PLD we can write that as: (note / means inverted a plus is OR, and * is AND)
So A is 0 in case of input being (1,4,B,D)
/QA = /D1 * /C1 * /B1 * A1
+ /D1 * C1 * /B1 * /A1
+ D1 * /C1 * B1 * A1
+ D1 * C1 * /B1 * A1Complete code for galasm
Compiling and burning
GAL22V10
7SEGMENT
Clock D1 C1 B1 A1 D2 C2 B2 A2 NC NC GND
/OE NC NC NC QG QF QE QD QC QB QA VCC
/QA = /D1 * /C1 * /B1 * A1
+ /D1 * C1 * /B1 * /A1
+ D1 * /C1 * B1 * A1
+ D1 * C1 * /B1 * A1
/QB= /D1 * C1 * /B1 * A1
+ /D1 * C1 * B1 * /A1
+ D1 * /C1 * B1 * A1
+ D1 * C1 * /B1 * /A1
+ D1 * C1 * B1 * /A1
+ D1 * C1 * B1 * A1
/QC = /D1 * /C1 * B1 * /A1
+ D1 * C1 * /B1 * /A1
+ D1 * C1 * B1 * /A1
+ D1 * C1 * B1 * A1
/QD= /D1 * /C1* /B1 * A1
+ /D1 * C1 * /B1 * /A1
+ /D1 * C1 * B1 * A1
+ D1 * /C1 * B1 * /A1
+ D1 * C1 * B1 * A1
/QE = /D1 * /C1 * /B1 * A1
+ /D1 * /C1 * B1 * A1
+ /D1 * C1 * /B1 * /A1
+ /D1 * C1 * /B1 * A1
+ /D1 * C1 * B1 * A1
+ D1 * /C1 * /B1 * A1
/QF = /D1 * /C1 * /B1 * A1
+ /D1 * /C1 * B1 * /A1
+ /D1 * /C1 * B1 * A1
+ /D1 * C1 * B1 * A1
+ D1 * C1 * /B1 * A1
/QG = /D1 * /C1 * /B1 * /A1
+ /D1 * /C1 * /B1 * A1
+ /D1 * C1 * B1 * A1
+ D1 * C1 * /B1 * /A1
DESCRIPTION
A 7 segment hex decoder
galasm 7seghex.gal
minipro -p ATF22V10CQZ -w 7seghex.jed
minipro -p ATF22V10CQZ -w 7seghex.jed Found TL866II+ 04.2.129 (0x281) Warning: Firmware is newer than expected. Expected 04.2.128 (0x280) Found 04.2.129 (0x281) VPP=12V Warning! JED file doesn't match the selected device! Declared fuse checksum: 0x98D5 Calculated: 0x98D5 ... OK Declared file checksum: 0x40B3 Calculated: 0x41A8 ... Mismatch! JED file parsed OK Use -P to skip write protect Erasing... 0.33Sec OK Writing jedec file... 5.01Sec OK Reading device... 0.32Sec OK Writing lock bit... 0.35Sec OK Verification failed at address 0x16C6: File=0x01, Device=0x00 < ------------------ Gives error, but burning seems okay henri@zspot:~/projects/galasm$ minipro -p ATF22V10CQZ -r 7seghex.out Found TL866II+ 04.2.129 (0x281) Warning: Firmware is newer than expected. Expected 04.2.128 (0x280) Found 04.2.129 (0x281) Reading device... 0.32Sec OK Gives all zeros as output, but device works!
Made a simulation of my new address decoder.
It uses a 74LS138 and a bunch of NAND gates.
You can safe using 4 NAND gates if you are not going to use split IO
| Address | ||
| 8000-FFFF | ROM | ROM |
| 7000-7FFF | Sound chip | SID |
| 6000-6FFF | Display + cursor | VIA1 |
| 5000-5FFF | Keymatrix | VIA2 |
| 4800-4FFF | split io | IO |
| 4000-47FF | split io | IO – ACIA |
| 0000-3FFF | Uses clock | RAM |
UPDATE: Found some 74LS139, so i could have changed some things around.
Try it over here:
Video drinking beer in the garden, use mouse to move!
UPDATE 20240927 PCBs are in
I found some stuff while sorting out some old computer stuff.
Way back, when my Amiga was my main computer, i wanted to make my own version. A modular one.
So i started to segmentize the amiga, to put it on several exchangeable cards.
Eurocards are standardized prints 150mm x 100mm, mostly with a DIN41612 connector.
When you make modules you can change/upgrade/test, you can have a very easy interchangeable system using a backplane like this
So i started planning those modules:
I had a nice case which could hold a big backplane, custom powersupply. And a front panel containing drives, leds and knobs. (I know i have more info on this somewhere on my fileserver)
A nice example picture i found on danceswithferrets website
I never finished this project.
I used Tech Manuals and print layouts to understand how things where done.
I started to draw the modules like they where placed on the print on semi transparent (chalk)paper, the kind of paper that was used for electronic and mechanic diagrams.
UPDATE 20240927 PCBs are in
UPDATE : Bought after selling these
The last days i’ve been selling a lot of my old computers.
They have been in my collection for many years, but now its time to part.
Time for others to enjoy them.
(Instead of posting which ones are being sold and which i’ve still got on this page i’ll make another post)
I started collecting when i studied computer sciences.
It’s a wonder my parents attic wasn’t collapsing.
(They let me store many computers on their attic, let me run a mainframe in the house (previous post) and let me have computer-parties (pre-lan) in their home. (They even left, and gave me the space) .. 15+ teens with computers … there was a pingpong table in the livingroom (besides the other tables in the house ) For all computers.
Then i’ve got even more, when living on my own. (At some point about 140. )
A few years later i got rid of uninteresting computers (to my taste at that time) and incomplete ones. Then i filtered-out the non working.
Still leaving with a lot of computers, i kept these for many years.
Now i only want the ones i’ve worked with, or are special to me.
My first computer was a Commodore Vic-20. Friends had the popular C64. So i kept 2 of both.
In Junior Technical School i’ve used the BBC Acorn a lot (Funny story below)
My then friend Richard had a Atari ST, loads of fun we had with that machine, so i’m keeping a Atari 1040STf.
Another friend used a Apple SE, so that one i also keep for now.
I’ve been programming a lot on 80×86, the first dos PC’s, i’m still looking for a old machine (Laser XT) which i used way back then. But for now i’ve got a Sinclair PC200.
I’ll keep a old Commodore PET 2001, because its cute.
Besides having a cute PET, i’ve got a Holborn System. Made in Holland (Enschede), there are only a few left according to some sites: only 200 made! (Holborn means Holland Born) One of the inventors was from Holten, my birthplace. (Polak)
At school we kept a list of everyone’s collection.
Soo .. the story about the BBC Acorn.
When i was at school outside study hours, i went to the computer lab.
This was one classroom with about 16 BBC Acorns and a master (teacher station). When they saw how enthusiastic i was, i got the key to the classroom. I even got access to the master system. And after a little hacking i’ve gained access to the teachers files.
There was a simple network system, i think it was called Econet.
The teachers system was the only one with a disk station.
I liked the ‘highres’ line graphics you could make on the machines. (640×256)
So i’ve wrote a lot of programs using this mode.
I even wrote a program which drew a 3D robotarm on screen using wireframe graphics.
At that time my mathematics scores where .. bad.
Wasn’t interested i think.
But drawing 3D robotic arms are not possible using mathematics, like using sinus, triangulary etcetera.
So when my mathematics teacher saw my program, he didn’t believe me.
So .. fooling around in the computer lab, i missed start of classes. And later on .. worse .. i almost was not allowed to do my final exams.
I was late several times (and one of the first to leave, …. straight from and to the computer lab. )
I’ve got some programs printed on paper, i will use my leftover BBC Acorn (or a emulator) to capture some screen examples.
Sold stuff
UPDATE : Selling a lot, but i’ve bought some others between 2020-2023
Also a “new” 1084 monitor (CRT for a Commodore 64)
Now i have to look for a VGA Crt to get old vga-register manipulation programs working.
Still hot outside, and i like coffee. So what about some coffee icecream!
Ingredients:
Place a fine meshed strainer over a container. Put the coffee in the seive. Heat the milk (allmost boiling) and pour it over the coffee. Let it cool.
Dissolve the sugar in 150ml water. Bring to the boil for a few minutes.
Let this also cool for a few minutes.
Pour the sugarliquid to the container holding the eggyolks. Add the liquid cream and the coffee-milk solution.
Cool in the refrigerator and put into your icecream maker. Thats all.
Used this ice maker for many years, a lot of different icecreams we made!
Divers new additions to the 6502 project
Above is my design for a hex keyboard to enter opcodes in hex using a simple monitor program.
i used a 74ls922 which can decode a 4×4 matrix. I’d rather had a 74ls723 which can encode 20 keys.
Nowhere to be found. So i have to think of a new plan.
Now it is configured as follows:
| C | D | E | F |
| 8 | 9 | A | B |
| 4 | 5 | 6 | 7 |
| 0 | 1 | 2 | 3 |
When pressing the alternate key
| addr (to implement) | run (1/2 implemented) | reset (to implement) | |
| step instruction (to implement) | |||
| memory next | |||
| memory previous |
Meanwhile i’ve ordered new keys (the ones i’ve been using for my photomanager project and wnat to have a setup like this:
| ? | ? | addr | run | reset |
| C | D | E | F | ? |
| 8 | 9 | A | B | step |
| 4 | 5 | 6 | 7 | mem next |
| 0 | 1 | 2 | 3 | mem prev |
When you want to show the status of busses and alike, you can’t use a led and restistor directly on the bus, it will require too much current.
So i’ve been using below schematic which uses a darlington array.
Now i can display databus, address bus and i’ve been using this for address decoding logic and hex keyboard.
I’ve implemented a second VIA chip, and ordered components to amplify the SID sound part
I play several instruments, and know a lot of tunes by heart. But for some instruments i’d like to have a music sheet in front of me.
When playing new tunes or from my old stash, i need it on paper also.
And when i do, I’d like my music nicely printed and in the same style.
So i’ve been using multiple programs and tools to get a result i can live with.
I’ve got a huge collection of pipe and folk tunes, but whenever i decide that i’m going to play it more often then i’m going to re-create the music sheet.
The musicsheet will be printed and put in a folder. But also as PDF wil be placed in my calibre server, with i use to provide my tablets and phones with a digital version.
For automatically generating a PDF musicbook i’ve written some scripts.
These PDF’s i can use with my DIY bluetooth page turner.
For my bagpipe tunes i started a long time ago with a dos version of Bagpipe Music Writer. Getting a decent result from your printer was a b*tch. But it was do-able.
Several other programs i’ve tried but few stuck.
CelticPipes, Ceol Mor, Bagpipe (French), MusicTex, Lilypond for example.
I don’t like to click a symbol and place it on the bars, i like typing .. so i’m a little biased.
For midi and printing multi bar/staff music i also used Cakewalk Pro.
So i’ve been using the following software:
ABC Music notation :
X: 1 T:After the Battle of Aughrim R:Polka M:2/4 K:ADor E2A2 ABcd | e2d2 c3A | B2G2 GFGA | B2AG E2D2 | E2A2 ABcd | e2d2 e2ag | e2d2 BedB | A4 A4 :| |:\ a2e2 e2fg | abag e2fg | abaf g3e | dedB G4 | a2e2 e2fg | abag e2d2 | B2e2 d2B2 | A4 A4 :|
# Edit/createing a abc music file
vi musicpiece.abc ; edit with plain editor
abcm2ps musicpiece.abc ; convert to ps
ps2pdf14 Out.ps musicpiece.pdf ; ps convert to pdf
Also EasyABC i use occasionally
Bagpipe music:
I still use Bagpipe Music Writer, but the free Player, which is a full version also. (Long story)
Using wine on linux it is usable.
In the past i made a virtual machine which could be controlled by a web form and some CGI scripts.
I could paste a “bmw” score in a webform which would be send to the virtual machine, a BMW program would be started, printed the tune as a PDF that was send to the website again.
For a long time i also had a abc music to PDF convertor on my website.
I like the way of writing the tunes .. just type abbreviations of ornaments to print.
When you know these you are faster than using a mouse!
& sharpf sharpc I! hdbe Er_8 'e LAl_16 gbr LA_4 dbe Er_8 'e LAl_16 gg Fr_16 El_16 Dl_8 ! dbe Er_8 'e LAl_16 gbr LA_4 dbhg HG_4 tg Fr_16 HAl_8 'ha ! hdbe Er_8 'e LAl_16 gbr LA_4 dbe Er_8 'e LAl_16 gg Fr_16 El_16 Dl_8 ! dbb Br_8 'b LAl_16 gg LGr_8 'lg dg Bl_16 dbhg HG_4 tg Fr_16 HAl_8 'ha !t
There is no way to write harmonies.
In the past i’ve been using a pdf editor to merge music bars and align those by hand.
I’ve stopped doing that. I just print 2 versions.
Sometimes i use MuseScore for harmonies and multiinstrumental sheets
I wil post my MusicBook compiler here, when i’ve cleaned up the code.
UPDATE: https://www.henriaanstoot.nl/2022/12/09/generating-pdfs-from-abc-files-to-include-in-tunebooks/