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

*save "hack" 900 +200 900 900

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 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...

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...

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...

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

i can only work with paper , pencile and so on

i even have plastic things with symbols to draw

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...

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...

viewtopic.php?f=3&t=12385&p=157867&hilit=psu#p157867

read this

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

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...

SMART-SPI works allways , but oke it is not from the UK , but from a strange dutch man

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...

the problem with lifting a rom is the space around it
most of the time a cap or resistor blocks it

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...

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 ...

use m3 , like the pc scews

allso do this
with
uhf out on tv

mode 7

vdu 130 return
text

vdu132 return
text

your pictures are in colour but

what happens with

vdu129 in mode 7
then text ?

richmond62 wrote: ↑

Sun Jun 10, 2018 6:33 pm

is your monitor a colour monitor ?

Look at my photographs before you ask me questions like that.

is your monitor a colour monitor ?

try mode 7
vdu 129 return
type text
vdu 130 return
type text

enz,enz

richmond62 wrote: ↑

Sun Jun 10, 2018 6:15 pm

I was just running MODE 5 as a rough guide.

white is all the colours RGB together

try mode 2 for colour

or in mode 7

vdu129, or vdu130,131,132,133 enz

if colours are not the right one maybe reverse colours ?
or burst is not good

quick look at schematic. i have no time left tonight but

check s39 ? someone can quick look what that is ?

Csync not good at modulator

Burst gate not good at modulator

modulator broken

you can simple test this , but if no englishman can tell you

the dutchman can tommorrow

your modulator from your bbc can be broken , or your sync is gone :), i have to look at the schematic #-o if you want to solve it you must open your bbc and know what you are doing :shock: do you have a multimeter , i shall not ask about the scoop anymore [-X , with scoop you can find your sync , ht...

oke in simple englisch please :) what is the problem ? if you turn on your bbc , connecting uhf out to tv arial in you get picture ? if you turn on your bbc , connecting video out to tv video in with yellow cable and convertor to scart tv in no picture ? if you turn your master on , no picture on tv...

i have allso not must time for the bbc ...... pin 12 with jumper on piep , jumper off no piep :) i will puzzle sometime some more :) still wonder ? use multimeter. on 74ls682 pin 10 black red on pin 12 , piep ? red on 14 piep ? red on 16 piep ? red on 18 piep ? Sorry for the late reply... pin 10 bla...

how works electron with roms ?
where is adfs rom and pres plus 1 rom ?
not on MB board ?

i think the sideway 6264 has a conflict with these roms.
maybe the board was before they install the adfs rom and/or plus1 rom ?

maybe leave the switch in up or down position ? then ctrl break ? the problem is i don't have an electron by hand there are wires connected with lk8 ( OE ?) wires at 6264 pin 27 i can't see well and white wires further away by 6502a chip i think the adress by 74ls682 is &3000 above but i will more i...

still wonder ?

use multimeter.

on 74ls682

pin 10 black
red on pin 12 , piep ?
red on 14 piep ?
red on 16 piep ?
red on 18 piep ?