Search found 2879 matches

by duikkie
Thu Aug 16, 2018 6:32 am
Forum: off-topic
Topic: what can be broken 36volt accupack ?
Replies: 0
Views: 92

what can be broken 36volt accupack ?

look at pictures i think that the board had to deliver to much power :( but what are the big black thinks :) a schematic of a 36 volt 16 or more AMP loader will help ofcourse this one is special made voor limpurg :( on ebay this https://www.ebay.co.uk/itm/10S-30A-36V-Li-ion-18650-Battery-BMS-PCB-Pro...
by duikkie
Wed Aug 15, 2018 5:55 am
Forum: hardware
Topic: Rrad only 8271!
Replies: 6
Views: 268

Re: Rrad only 8271!

a chip can be faulty in different ways :)
most of the time a part of a chip is still working
by duikkie
Sun Aug 12, 2018 5:29 pm
Forum: hardware
Topic: Some game not displaying and not working
Replies: 6
Views: 243

Re: Some game not displaying and not working

if your still have problems maybe open up your beeb ?

maybe some chips are missing for dfs ?? not propper installed ?

turbo mmc must work if rom is there :)

try :

*help

then
*dmmc or *card
by duikkie
Thu Aug 02, 2018 5:45 am
Forum: hardware
Topic: User port not working?
Replies: 5
Views: 277

Re: User port not working?

mmm that is a first turbo mmc was working and the SPI rom not ?? both use the same routine for checking the card and user port. they do not work together ! one at the time :) first check your keyboard. if that gives problems the whole beeb has troubles. maybe a key is pressed or hangs ? second check...
by duikkie
Thu Jul 26, 2018 8:53 pm
Forum: software: other
Topic: Bulidable HackROM
Replies: 2
Views: 287

Re: Bulidable HackROM

if people make things , perhaps it is useful to explain what they have made ??
by duikkie
Wed Jul 25, 2018 2:55 pm
Forum: software: other
Topic: Today I hacked ...
Replies: 96
Views: 10037

Re: Today I hacked ...

very strange is that the programmers not use to check in the main program if the disck with track 1 is still there ???

sub program : read id's of track 1 eor with data if not a result disk is not org. disc. bad disc/program :D
by duikkie
Wed Jul 25, 2018 2:43 pm
Forum: software: other
Topic: Today I hacked ...
Replies: 96
Views: 10037

Re: Today I hacked ...

oke know how it is done :) the m code with !boot reads every time track 1 sector 0 , because all sectors are 0 :) now how to get every sector 0 in memory &2000 ... &2a00 it is timing. riscky but that is why i do not work on every dfs. from &30d9 to &312c they are syncing the disc time at &312c they ...
by duikkie
Mon Jul 23, 2018 5:45 am
Forum: software: other
Topic: Today I hacked ...
Replies: 96
Views: 10037

Re: Today I hacked ...

oke :) it is hot , and i am an old man. maybe that is the reason i do not read every thing that is written :) ?? oke this is the fix still not sure if it runs oke ? too hot to try ? As Col wrote here, there's already a fully working version (not that another version / method can hurt!) https://stard...
by duikkie
Sun Jul 22, 2018 7:03 pm
Forum: software: other
Topic: Today I hacked ...
Replies: 96
Views: 10037

Re: Today I hacked ...

oke this is the fix still not sure if it runs oke ? too hot to try ? i have changed !boot in menu part line 1 to 480 (first part) del line 20 and 80 this program is now &1e8 big loaded at 1900 normale put a up loader at &2100 the hack part at &2200 to &2400 first download hack from &2200 to &900 the...
by duikkie
Thu Jul 19, 2018 2:35 pm
Forum: software: other
Topic: Today I hacked ...
Replies: 96
Views: 10037

Re: Today I hacked ...

oke test2.ssd almost what the programmers had in mind the menu is allso the begin screen :shock: the *exec !boot and load menu till line 850 if you delete every think after that there is more room the ?&8f=127 i know understand the second time it is ?&8f=0 and the hole menu is loaded :) still not su...
by duikkie
Thu Jul 19, 2018 6:21 am
Forum: software: other
Topic: Today I hacked ...
Replies: 96
Views: 10037

Re: Today I hacked ...

is this working on a real beeb ? i don't have here a real bbc to test :( test this ! i am not a player . how to move in this game ? i have to lose !boot. because the disc is full changed program menu you need to do pa.=&2200 ch."menu" do not know about the ?&8f=127 ??? try it ? see test i think if y...
by duikkie
Wed Jul 18, 2018 4:04 pm
Forum: software: other
Topic: Today I hacked ...
Replies: 96
Views: 10037

Re: Today I hacked ...

test this ! i am not a player . how to move in this game ? i have to lose !boot. because the disc is full changed program menu you need to do pa.=&2200 ch."menu" do not know about the ?&8f=127 ??? try it ? see test i think if you add *lo. hack 900 to menu program then it will work oke ? *save "hack"...
by duikkie
Mon Jul 16, 2018 7:16 am
Forum: software: other
Topic: Today I hacked ...
Replies: 96
Views: 10037

Re: Today I hacked ...

i think if you add *lo. hack 900 to menu program then it will work oke ?

*save "hack" 900 +200 900 900
by duikkie
Mon Jul 16, 2018 5:31 am
Forum: software: other
Topic: Today I hacked ...
Replies: 96
Views: 10037

Re: Today I hacked ...

if we want to know what is going on we need the disk track ID from track 0 and track 1 the !boot i think is on the real track 0 , loads track 1 with delayes own nmi routine (&d00) comparing every loading sector with the one it has loaded in memory at 2000 to 2a00 looking only from 20CC on, till 2100...
by duikkie
Sun Jul 15, 2018 11:37 am
Forum: software: other
Topic: Today I hacked ...
Replies: 96
Views: 10037

Re: Today I hacked ...

by 8271 you don't need track 0 , sec 0 sec1 and sec2. look at my disc protect systeem :). if the 8271 do not find after index hole track 0,sec0,1 it steps 255 times all over de disc to find it :) so track 0 sec1,sec2 can be at track 9 the only thing you have to do is make track 9 the ids for track 0...
by duikkie
Sun Jul 15, 2018 5:16 am
Forum: software: other
Topic: Today I hacked ...
Replies: 96
Views: 10037

Re: Today I hacked ...

yeah, but how ? if a discchip(8271or1770) reads a sector it is the hole sector 128 bytes, (like &e00)you can set you memory 51 bytes futher that you can do so the next sector comes &e52 and so on. but then you must know which sector is the start . if a track has more the same sectors id , the you ha...
by duikkie
Sat Jul 14, 2018 5:40 pm
Forum: software: other
Topic: Today I hacked ...
Replies: 96
Views: 10037

Re: Today I hacked ...

how do you see that happening ? if id is the same the first good id that the head finds it loads in memory ? so how is it only 51 bytes ? or is there a program that knows load sec and then if same read again ?? [snip] Then I had a eureka moment, may be track1 had sector's 1to9 hidden. BillC confirme...
by duikkie
Sat Jul 14, 2018 5:27 pm
Forum: hardware
Topic: Need help figuring out how to fix a couple of Beeb PSUs
Replies: 21
Views: 541

Re: Need help figuring out how to fix a couple of Beeb PSUs

i am a old men pc's are to moderne for me :)

i can only work with paper , pencile and so on :shock:

i even have plastic things with symbols #-o to draw :)
by duikkie
Fri Jul 13, 2018 4:18 am
Forum: software: other
Topic: Today I hacked ...
Replies: 96
Views: 10037

Re: Today I hacked ...

there is one protection on disc i have not seen yet :) , maybe one day someone will use the found "bug"in formating a disc and use it for protecting a program :) i used it ones for demo was a disc with invator or someting : , with tank en houses at th the bottom of the screen. but my protecting disc...
by duikkie
Fri Jul 13, 2018 4:09 am
Forum: software: other
Topic: Today I hacked ...
Replies: 96
Views: 10037

Re: Today I hacked ...

no more people use a system that has more track 0 , my protected disc use bad track 0 , track 1 , track 2 = track 0 and i do not rember but was track 4 not also track 0 . it only wordks with 8271 , because there you have a command for skip bad tracks. but maybe all chip controles looking for track 0...
by duikkie
Mon Jul 09, 2018 8:52 pm
Forum: hardware
Topic: Need help figuring out how to fix a couple of Beeb PSUs
Replies: 21
Views: 541

Re: Need help figuring out how to fix a couple of Beeb PSUs

there is on this forum how i fixed a bbc psu, someone can find the link for you ? i am very bad in finding things there are a lot of things that can go bad on a psu , mostly it is the flyback that stops the psu from working try to find the link. sometime a transistor looks good but is bad , and so on
by duikkie
Thu Jul 05, 2018 12:24 pm
Forum: hardware
Topic: Super MMC Problem or User Error?
Replies: 16
Views: 306

Re: Super MMC Problem or User Error?

not seen the card , but maybe the mmc 1gb has half block or and byte transfer of bytes. off course you did read the document about protocol SD card version 4 if a card is version 2 or 3 it has block transfer but if the cmd it there and for what for reason it only has byte transfer (mmc is old standa...
by duikkie
Thu Jul 05, 2018 12:19 pm
Forum: hardware
Topic: Super MMC Problem or User Error?
Replies: 16
Views: 306

Re: Super MMC Problem or User Error?

SMART-SPI works allways :) , but oke it is not from the UK , but from a strange dutch man :wink:
by duikkie
Thu Jul 05, 2018 5:27 am
Forum: hardware
Topic: Super MMC Problem or User Error?
Replies: 16
Views: 306

Re: Super MMC Problem or User Error?

i really hope they do stop selling SUPER rom or TURBO rom with our user port sd card device. it is really out of date !!! you can use other rom software an i can only one :) SMART-SPI rom , i always forget the orther one :) something about the yellow and red candy ? MM..... but that is not the probl...
by duikkie
Tue Jun 26, 2018 5:34 am
Forum: hardware
Topic: My Turbo MMC Misadventures
Replies: 41
Views: 1266

Re: My Turbo MMC Misadventures

the problem with lifting a rom is the space around it
most of the time a cap or resistor blocks it :(
by duikkie
Wed Jun 20, 2018 5:33 am
Forum: hardware
Topic: My Turbo MMC Misadventures
Replies: 41
Views: 1266

Re: My Turbo MMC Misadventures

some dutch tricks , i think the uk people can translate it in good englisch use double IC 28 pins socket. buy or get a good ic 28 pins socket , with good legs not the chinees 0.05 pence things :) many someone in uk can put a picture which i mean ? so you have a good empty 28 pins socket, put your ro...
by duikkie
Sun Jun 17, 2018 6:48 pm
Forum: hardware
Topic: Master PSU repair - not going well
Replies: 14
Views: 535

Re: Master PSU repair - not going well

look for item on this forum bbc PSU, was the psu not the same as bbc ? is the problem still short circuit or is the light still on if you turn the psu on ? the problem is maybe the flyback circuit. if the psu is allmost the same as bbc psu read the item about bbc psu it can be a lot of small things ...
by duikkie
Sun Jun 10, 2018 8:10 pm
Forum: hardware
Topic: BBC Model B Parts
Replies: 2
Views: 220

Re: BBC Model B Parts

use m3 , like the pc scews
by duikkie
Sun Jun 10, 2018 6:53 pm
Forum: hardware
Topic: Monitors
Replies: 48
Views: 1161

Re: Monitors

allso do this
with
uhf out on tv
:)