Search found 2953 matches

by duikkie
Thu Mar 13, 2014 7:17 am
Forum: hardware
Topic: how cheap is bbc b iss7 components on board ??
Replies: 1
Views: 652

how cheap is bbc b iss7 components on board ??

when i had my problems with repairing a bbc b iss 7 board i saw that there are a lot of 10% tolerants resistors also the i mine eyes mistake chip ic6 2023 a lot of chips that are diffent with my bbc b iss4 made in portugal ?? who knows with bbc b with problems are iss7 ? and how much are iss4 or les...
by duikkie
Wed Mar 12, 2014 11:53 pm
Forum: software: other
Topic: are there virus software written for bbc b ?
Replies: 49
Views: 2476

Re: are there virus software written for bbc b ?

i am glad , because with mmc card inside , and a at28c256 . you start to wonder people who transfer any thing without black label to protect the software :evil:
by duikkie
Wed Mar 12, 2014 8:37 pm
Forum: software: other
Topic: are there virus software written for bbc b ?
Replies: 49
Views: 2476

are there virus software written for bbc b ?

i wonder is there any virus written in 6502
or was virus something that started with 8088 ?
by duikkie
Wed Mar 12, 2014 7:33 pm
Forum: hardware
Topic: sy6522 /// sy6522A
Replies: 6
Views: 591

Re: sy6522 /// sy6522A

so sy6522A has to work as sy6522 in bbc ?
or is it fixed to 2mhz, and can not slow down ?
hoglet wrote:
duikkie wrote:i can't find it

are they the same ?

what means A
A = 2MHz

B = 3MHz

http://www.classiccmp.org/cini/pdf/SYM/SYM1_REF05.pdf
by duikkie
Wed Mar 12, 2014 7:04 pm
Forum: software: other
Topic: Your BBC "essentials"?
Replies: 9
Views: 1609

Re: Your BBC "essentials"?

EXMON ,basic ;)
Imagination :lol:

books
the advanced user guide
the advanced disk user guide ( for 8271)
by duikkie
Wed Mar 12, 2014 6:55 pm
Forum: hardware
Topic: sy6522 /// sy6522A
Replies: 6
Views: 591

sy6522 /// sy6522A

i can't find it

are they the same ?

what means A
by duikkie
Wed Mar 12, 2014 6:41 pm
Forum: hardware
Topic: BEEB won't start up
Replies: 5
Views: 671

Re: BEEB won't start up

is the tekst still or is it moving ?? by moving text , maybe you can look at hs,vs signal or nsync I have had another good morning, fixing a duffer with a RAM problem :D but this one is still a no-go. I have swappped the 6502 4650 6522 6522 LS245 VIDPROC just 'cos they are socketted and to prove the...
by duikkie
Wed Mar 12, 2014 5:52 pm
Forum: hardware
Topic: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem
Replies: 13
Views: 1321

Re: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem

the normal 74ls393 for discdrive 8271 chip (fm) if you upgrade the bbc to 1770 in the manual there is no need anymore for this chip ?? " These upgrade instructions are for the use of persons fitting the 1770 Disc Interface Module to any issue of the BBC microcomputer Model B. This 1770 disc upgrade ...
by duikkie
Wed Mar 12, 2014 4:43 pm
Forum: hardware
Topic: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem
Replies: 13
Views: 1321

Re: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem

forgotten spike on pin 7 ic6 gone ic 81 was pulling down the hole line 8 mhz
by duikkie
Wed Mar 12, 2014 4:41 pm
Forum: hardware
Topic: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem
Replies: 13
Views: 1321

Re: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem

SOLVED :o chip ic 81 or socket for this chip ? i removed ic 81 and the beeb came to life =D> i broken off pin 1 from 6522 :cry: , to fined this problem i can now say that the person how upgraded this bbc b to 1770 had before a broken 8271 interface. because the chip is not nessesary i believe for th...
by duikkie
Wed Mar 12, 2014 12:00 pm
Forum: hardware
Topic: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem
Replies: 13
Views: 1321

Re: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem

8mhz only on ic86 s27 south ??
by duikkie
Wed Mar 12, 2014 11:57 am
Forum: hardware
Topic: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem
Replies: 13
Views: 1321

Re: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem

i put mine iss7 at the scoop strange think around pin 4,5,6,7 and 8 from vc2023 cheap ?? i have a spike peak on the mountain pin 7 also ic37 pin 4 stay low , not good pin 9 and 8 from ic30 do not change then also 1,2,3,4,5,6 not to check on ic37 pin 5 do change pin 6 by 1 mhz something is wrong with...
by duikkie
Wed Mar 12, 2014 11:34 am
Forum: hardware
Topic: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem
Replies: 13
Views: 1321

Re: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem

CMcDougall wrote:
Iss7 back wire.jpg
hope this picture helps Mr. Boot, so your Iss7 will, well..... boot :lol:
thanks but is it not pin 27 to pin 1 ic 10 , like mine ??

in manual the tolk about pin 27 to ttx-vdu that is pin 1 ic 9 or ic 8 ?

but i think that not mine problem
by duikkie
Tue Mar 11, 2014 11:43 am
Forum: hardware
Topic: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem
Replies: 13
Views: 1321

Re: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem

can you tell me the wire on iss 7 from ic6 underside board is it on chip 10 or else it said link between pin 27 ic6 to ttl-vdu or something like that , but mine dead iss7 has link pin 27 to not(ttl-vdu,, xor or or chip before pin) that's because i have now black/wit flashing on the monitor ?? did i ...
by duikkie
Tue Mar 11, 2014 7:38 am
Forum: software: other
Topic: BBC Micro ROM ripping software
Replies: 17
Views: 2599

Re: BBC Micro ROM ripping software

don't look at all, totale different menu menu watford looks cheap :) sorry don't have the same board mine is atpl rom/ram board looks rather like it :^o menu1 is totaly basic , with funny basic(6502) in data ;) i think it will work with 1770 looks rather like the one that came with my Watford Electr...
by duikkie
Tue Mar 11, 2014 7:12 am
Forum: software: other
Topic: BBC Micro ROM ripping software
Replies: 17
Views: 2599

Re: BBC Micro ROM ripping software

no 6264 in bank 14a and 14b or was it 15a /15b ??
9 rom images is that 9 roms or pictures from rom [-X #-o

CMcDougall wrote:
duikkie wrote: i do have this board , only it do not work correctly, it takes to long ? to adress more than two roms
mine is fine, works super fast with 9 rom images and 3 eproms 8)
by duikkie
Mon Mar 10, 2014 11:47 pm
Forum: software: other
Topic: BBC Micro ROM ripping software
Replies: 17
Views: 2599

Re: BBC Micro ROM ripping software

mmm works fine , i think my iss4 board have a problem even super mmc sometimes take a long time to work. so now i have to fined another err, on this iss4 board. if a did not have anything else to do :roll: , why do a man have to sleep , totaly wast of time. it is the second time i hear of my program...
by duikkie
Mon Mar 10, 2014 10:15 pm
Forum: software: other
Topic: BBC Micro ROM ripping software
Replies: 17
Views: 2599

Re: BBC Micro ROM ripping software

??? i do have this board , only it do not work correctly, it takes to long ? to adress more than two roms, with os and basic rom it works , and dfs or exmon it faults ?? menu1 i wrote myself, so if watford electronics came with it, someone is borow my menu ?? did you run menu1 ? it print somethink o...
by duikkie
Mon Mar 10, 2014 1:39 pm
Forum: hardware
Topic: Beeeeeeeeeeeeeeeeeeeeeeeeeeeeee BIP!
Replies: 8
Views: 988

Re: Beeeeeeeeeeeeeeeeeeeeeeeeeeeeee BIP!

ic 16 is the power up reset , signal ??? what is number 2 ? I don't have access to any schematic diagrams at the moment, but it could well be a faulty capacitor or resistor in one of the two reset circuits (yes the Beeb has two, so it can tell the difference between power on reset and just a BREAK r...
by duikkie
Mon Mar 10, 2014 1:35 pm
Forum: hardware
Topic: Beeeeeeeeeeeeeeeeeeeeeeeeeeeeee BIP!
Replies: 8
Views: 988

Re: Beeeeeeeeeeeeeeeeeeeeeeeeeeeeee BIP!

with issue is the board, i have one that is issue 7 and sound like one beeeeeeeeeee . your one step futher then mine :)

maybe yours is cold/hot problem ?
by duikkie
Mon Mar 10, 2014 12:45 pm
Forum: hardware
Topic: problem mmc interface with SWR board solidisk
Replies: 23
Views: 2227

Re: problem mmc interface with SWR board solidisk

maybe menu or menu1 suprise you anyway :) menu is very advanded with 8271, and sideway ram sheap maybe with 28c256. i don't no yet #-o Hi duikkie, I don't have any SWRam STL boards in my Iss3 beeb, see link below: http://www.stardot.org.uk/forums/viewtopic.php?f=3&t=6912&hilit=solidisk#p79016 Now I ...
by duikkie
Mon Mar 10, 2014 12:24 pm
Forum: software: other
Topic: BBC Micro ROM ripping software
Replies: 17
Views: 2599

Re: BBC Micro ROM ripping software

danielj wrote:zip up anything then you can upload it :)
or RAR :)

it is strange to zip something that is a view kilobytes
by duikkie
Mon Mar 10, 2014 12:22 pm
Forum: hardware
Topic: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem
Replies: 13
Views: 1321

Re: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem

still no scoop :(
but when i connected it to a monitor with rgb cable
it gives , flicking black/wit screen
something to do with pin 27 from ic 6 not to ttx-vdu but to pin 1 ic10

maybe ic2 do something (6845) to ic6 ?
by duikkie
Mon Mar 10, 2014 9:35 am
Forum: hardware
Topic: problem mmc interface with SWR board solidisk
Replies: 23
Views: 2227

Re: problem mmc interface with SWR board solidisk

CMcDougall do you still work with stl sideway ??
look at software secion ripping rom's
i have uploaded two menu with funny stuff in it for SWR solidisk

i don't know how to send a prived message yet ??
every board is diffent ??
by duikkie
Mon Mar 10, 2014 9:26 am
Forum: software: other
Topic: BBC Micro ROM ripping software
Replies: 17
Views: 2599

Re: BBC Micro ROM ripping software

i hope i can upload the file's voor stlmenuad= stl menu advanded there is menu that work's with 8271 ( 1770 do strange) because i use a 8271 code to check your drives if no drive (1/3) it waits but go on to de next so drive 0 , drive 1 (if) , drive 2 , drive 3 (if) . because i did funny thinks it ha...
by duikkie
Sun Mar 09, 2014 2:00 am
Forum: hardware
Topic: Acorn Model B 1772 Disc Interface Kit
Replies: 5
Views: 929

Re: Acorn Model B 1772 Disc Interface Kit

maybe i have a 1770 kit in spare
i do have here a acorn bbc b ver 7 with i think a big ic6 problem
and because it is also a custum maded chip
i don't think they get around very much.

the 1770 kit has one little problem ;)
pin 1 is broken off :(
by duikkie
Sat Mar 08, 2014 7:58 pm
Forum: hardware
Topic: bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem
Replies: 13
Views: 1321

bbc ver 7 BEEEEEEEEEEEEEEEEEEP problem

i have a bbc ver 7 with a long beeeeeeep problem of course my scoop is at an other home, so i don't know if ic 6 is working but strange thinks has happend to this board. so is pin 27 of ic6 not conneted to ttx vdu but to pin 1 of ic10, i don't think this is a problem maybe it invert the wrong way. s...
by duikkie
Fri Mar 07, 2014 1:46 pm
Forum: introduce yourself
Topic: at last duikkie is here
Replies: 14
Views: 1700

Re: at last duikkie is here

for the english people duikkie means that i operate under the surface, where daylight is forbidden , and strange can happen :)

it is not underground :D , but...............
by duikkie
Fri Mar 07, 2014 9:11 am
Forum: software: other
Topic: BBC Micro ROM ripping software
Replies: 17
Views: 2599

Re: BBC Micro ROM ripping software

sorry the advanded STL menu , will also rip roms from bank 0 to 7. no problem
in 1985 i had every rom there was.

i did make software that showed you a game, and suck in the mean time al your roms on disk, sorry programmers :evil:
by duikkie
Fri Mar 07, 2014 9:00 am
Forum: software: other
Topic: BBC Micro ROM ripping software
Replies: 17
Views: 2599

Re: BBC Micro ROM ripping software

i have a menu program that copy's rom or ram from swr stl , to disc 8271 maybe 1770 ?? . it also can store to rom's from 8 k in 16 k and use them both , with swap util that will not go away util you power off the bbc

problem is how to upload the advanded STL menu ?? on forum