Search found 412 matches

by bprosman
Tue Mar 17, 2020 3:42 pm
Forum: acorn atom and system
Topic: Re: ROM IC24 Acorn Atom #A000-#AFFF
Replies: 26
Views: 629

Re: ROM IC24 Acorn Atom #A000-#AFFF

Why this way and not using the IC24 dumps that are available in the archives or do I miss something ?
by bprosman
Sun Mar 15, 2020 5:13 pm
Forum: acorn atom and system
Topic: Re: ROM IC24 Acorn Atom #A000-#AFFF
Replies: 26
Views: 629

Re: ROM IC24 Acorn Atom #A000-#AFFF

Yes, that still works. Today I received a few blue envelopes from "Belastingdienst"
Forgot to suspend your membership ? :wink:
by bprosman
Fri Feb 28, 2020 10:17 am
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

@Dave, Can i use more than one entry in the UCF file to use the current ID bits AND the 2x6 connector or is it OR-OR ? Assume its editing these lines to reflect the connections on the 2x6 connector : # ID/Jumper NET "mode" LOC="P140" | IOSTANDARD = LVCMOS33 | PULLUP ; # mode jumper NET "id<0>" LOC="...
by bprosman
Fri Feb 28, 2020 9:43 am
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

When determing the core to load, the mode link on the adapter is also used. You could extend this idea and treat pins on the extra 2x6 connector on the eepizza board as additional mode "links". Then you wouldn't need to change any of the existing adapters.
Excellent idea, thanks.
by bprosman
Fri Feb 28, 2020 9:14 am
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

Hi Dave, As I am making more progress with my "Hacked version" of the 6502 core I was thinking about customizing the bootloader. I have made a small circuit that can generate a 4-bit code to the ID bits of the board. Actually im looking of a "reload" (is that the reset of the EEPizza board)? Then (i...
by bprosman
Mon Feb 24, 2020 9:55 am
Forum: acorn atom and system
Topic: My 'new' Acorn Atom
Replies: 12
Views: 440

Re: My 'new' Acorn Atom

gidandridge wrote:
Sun Feb 23, 2020 7:23 pm
Thanks for this,

I assume you used the TSR 1-2450, as listed on that datasheet? They seem to give the right operating voltage.

Gav.
Indeed.
by bprosman
Sun Feb 23, 2020 7:02 pm
Forum: acorn atom and system
Topic: My 'new' Acorn Atom
Replies: 12
Views: 440

Re: My 'new' Acorn Atom

that you're still able to use the original 8v power supply?
Indeed and mostly because I find bypassing the original 7805's scary, as each time you have to realize that plugging in the original 8V supply will destroy most of the Atom.
by bprosman
Sun Feb 23, 2020 6:31 pm
Forum: acorn atom and system
Topic: My 'new' Acorn Atom
Replies: 12
Views: 440

Re: My 'new' Acorn Atom

I have replaced the 7805's with small switchers.
They stay cool (enough) to supply the whole system due to less dissipation.
IMG_7698.JPG
Traco 5V DCDC.pdf
(266.78 KiB) Downloaded 11 times
by bprosman
Wed Feb 19, 2020 2:04 pm
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

Maybe an alternative for the EEPizza.
19 Euro’s
9F182BC8-BB2B-412D-83C9-D5D23D9BEDB8.png
by bprosman
Sun Feb 16, 2020 6:49 pm
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

Do you mean it reverts to an earlier build after a power cycle?
It doesnt seem to do anything after a power Cycle, let me retry.
Or leave it for today :D
//Edit Fixed.
For some reason it must have made a mistake somewhere.
by bprosman
Sun Feb 16, 2020 6:36 pm
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

Is seem to be very overlooking something today :oops: :oops: :oops:
The ICE-T works fine but doesn't seem to keep it's config after power off :-(
by bprosman
Sun Feb 16, 2020 10:47 am
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

Hi Dave, I'm almost there :-) The IHEX file is being read, and correctly processed. The only thing is that after the last record (:00000001FF) , the program does say it skips the record (as the byte count is 0) but the timeout does not occur making the routine to return. My current code : //--------...
by bprosman
Fri Feb 14, 2020 9:04 pm
Forum: acorn atom and system
Topic: Two dead Atoms! Life Support possible?
Replies: 13
Views: 549

Re: Two dead Atoms! Life Support possible?

Actually no mod required, composite video is available on pen 9,10 of PL/4
by bprosman
Fri Feb 14, 2020 2:35 pm
Forum: acorn atom and system
Topic: Two dead Atoms! Life Support possible?
Replies: 13
Views: 549

Re: Two dead Atoms! Life Support possible?

Imho starts with default troubleshooting.

Strip it to the minimum config.
Are all voltages ok ?.
Is the reset circuit ok (level) ?.
Is there a clock in/out the CPU and video processor ?.

If that is all ok I (but I do owe one, so easy to suggest) throw in Dave (Hoglet's) ICE-T65
by bprosman
Sun Feb 09, 2020 4:13 pm
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

Yes , this is the "Junior Computer Revival" project I started a few years ago. It's running now. Today I will finalize an alternative keyboard (with cheap switches) as the PCB is designed for the original (expensive) "Digitasten". With the exception of 2 small design flaws (1 PCB trace error) it is ...
by bprosman
Sat Feb 08, 2020 7:31 am
Forum: acorn atom and system
Topic: It lives!
Replies: 16
Views: 714

Re: It lives!

What keyboard switches did you exactly use/order ? Especially also the space bar ?
by bprosman
Sun Feb 02, 2020 10:20 am
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

You haven't really explained whats "not working" or posted your current code, so it's hard to be of more help. You are fully right :-) But also a bit of my nature :oops: :oops: This is what I did in your SREC routine : (I added the logstr bits), that makes it loose reading the file correctly.. // P...
by bprosman
Sun Feb 02, 2020 12:00 am
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

9600 Baud as such does work but doesn't fix my timing issue.
Would reintroducing the LCD be an option or does that generate the same problem ?
by bprosman
Sat Feb 01, 2020 4:47 pm
Forum: acorn atom and system
Topic: Atom 2k18 ?
Replies: 287
Views: 16503

Re: Atom 2k18 ?

@Anton,

If you want I still have adapter PCB's :
viewtopic.php?f=41&t=12954&p=221943&hilit=godil#p221943

Kind regards, Bram
by bprosman
Sat Feb 01, 2020 12:32 pm
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

Hi Dave, As English is not my 1st language : "This may not be trivial to do." , does that mean difficult or easy ? :-) Isn't that a matter of changing the UART speed ? The Array route was something I was thinking about, dump everything in an array and spit that out once the file is read. Kind regard...
by bprosman
Sat Feb 01, 2020 10:11 am
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

Good morning Dave, Last night I was playing with the AVR code and tried adding some "debug" code. This unfortunately does not work (it breaks the SREC function). My guess is that handling the serial output takes too much time corrupting the incoming stream is that correct ? How do you debug this kin...
by bprosman
Fri Jan 31, 2020 4:08 pm
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

Are you currently working with the Z80 or the 6502? The 6502 , if it is already there I might have overlooked it, I was looking in the Wiki and/or "Help". //Update, I indeed overlooked it and it works like a charm. Using TeraTerm on Windows 10 (which is able to send text files). Sending (via SREC) ...
by bprosman
Fri Jan 31, 2020 3:25 pm
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

@Dave, Maybe i'm overlooking something but loading small programs into memory (currently via SREC) works great except , starting a program from a "user defined address" does not seem to exist ? I can see the reset, the continue , but not for example a "GO 0200" Or the ability to manipulate the Progr...
by bprosman
Fri Jan 31, 2020 2:41 pm
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

Here they are : FT232R.pdf Spartan-6 Family Overview.pdf Spartan-6 FPGA Data Sheet-DC and Switching Characteristics.pdf W25Q64BV.pdf XC6SLX9 Mini Board-Schematic.pdf XC6SLX9 Mini Board-User's Guide.pdf XC6SLX9 Mini Board Examples-Verilog.zip Bit confusing as it contains a datasheet of a W25Q64BV whi...
by bprosman
Fri Jan 31, 2020 11:03 am
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

Hi Dave, I'm using Windows 10 (1909). Actually the setup is quite similar to the Windows 7 setup as described in your Wiki. I use the the ISE14.7 windows version (not the VM), and install it on W10. Fix the installation doing : Fixing Project Navigator, iMPACT and License Manager Note: I am assuming...
by bprosman
Fri Jan 31, 2020 9:03 am
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

I can help you with setting up the development / compile environment on Windows (10).
by bprosman
Wed Jan 29, 2020 1:49 pm
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

Hi Dave, Thanks again for your (as usual) swift response and explanation. If you are still struggling, explain the commands you want to add, and their arguments, and I'll add the stubs for them (to your branch). It's very quick to do this. I'd like to add a command called "IHEX" which is similar to ...
by bprosman
Wed Jan 29, 2020 1:02 pm
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

Hi Dave, As I wanted to play with the AVR code I had some questions. I have looked into this before , and at that time I understood how it worked but there seem to be new bits. This section I fully understand : /******************************************************** * User Command Definitions ****...
by bprosman
Wed Jan 29, 2020 10:56 am
Forum: acorn atom and system
Topic: ICE T65/Z80/6809
Replies: 877
Views: 73036

Re: ICE T65/Z80/6809

The VCC connection is near the edge of the EEPizza board... you might recognize the colors in my picture.