Search found 1610 matches
- Sat Jan 29, 2011 11:52 pm
- Forum: Development
- Topic: ZX81 clock, but this one is different !
- Replies: 18
- Views: 12783
Re: ZX81 clock, but this one is different !
Whooey, i can read and write data to the RTC chip, bit banging i2c bus :) pretty pleased since as the last time i did any kind of bit banging i was in control of both sides so could pretty much do what ever i liked, but this time i had to write routines to conform with some other and previously unkn...
- Sat Jan 29, 2011 12:30 am
- Forum: Hardware
- Topic: New Hardware Projects
- Replies: 88
- Views: 43926
Re: New Hardware Projects
Looking good, hope it's trouble free when it comes to testing.
Regards Andy
Regards Andy
- Sat Jan 29, 2011 12:29 am
- Forum: Development
- Topic: ZX81 clock, but this one is different !
- Replies: 18
- Views: 12783
Re: ZX81 clock, but this one is different !
RTC chip turned up today, so thats been added to the project, hard drive a bit noisey to leave running all the time. so with addition of RTC should be able to turn it off and when next powered up the correct time can be restored. Well thats the plan anyway, still got to think how to do this bit bang...
- Fri Jan 28, 2011 8:38 pm
- Forum: GAMES
- Topic: While we are releasing games...
- Replies: 5
- Views: 6534
Re: While we are releasing games...
Yes, i wrote those too, mastermind is ok for what it is a zx80 program, which was written on my homebuilt zx80 before i robbed parts of it :lol: Mine field would be better if it was written in assembler, but it was for the crap game competion after all. Must try harder to write more programs, but la...
- Thu Jan 27, 2011 6:06 pm
- Forum: Hardware
- Topic: New Hardware Projects
- Replies: 88
- Views: 43926
Re: New Hardware Projects
Doh... it's not right, another look at your logic, if you can remeber what it was supposed to be doing. Keep at it i'm sure you'll crack it
- Thu Jan 27, 2011 5:59 pm
- Forum: WANTED
- Topic: Wanted ZX81 and ZX80
- Replies: 2
- Views: 7197
Re: Wanted ZX81 and ZX80
Hi,
There is usually ZX81 for sale on ebay, condition and price do fluctuate, ZX80 turn up from tim to time but nowhere as often of course you'll pay more for ZX80.
Regards Andy
P.s. Welcome to the forum.
There is usually ZX81 for sale on ebay, condition and price do fluctuate, ZX80 turn up from tim to time but nowhere as often of course you'll pay more for ZX80.
Regards Andy
P.s. Welcome to the forum.
- Wed Jan 26, 2011 11:28 pm
- Forum: Development
- Topic: ZX81 clock, but this one is different !
- Replies: 18
- Views: 12783
ZX81 clock, but this one is different !
things you will need... 1) old 3.5" disk drive (5400rpm) preferably with 2 platters. 2) some really bright rgb led's 3) IO interface. 4) ZX81 of course ! take the cover off old hard drive and rip out the heads and servo mechanismn (ooo yeah that never gonna work again), take off the platters and cut...
- Wed Jan 26, 2011 9:19 pm
- Forum: Sinclair Misc
- Topic: your zx81 life story...
- Replies: 10
- Views: 8320
Re: your zx81 life story...
Peter you hit the nail right on the headBut playing around with ZX81 was much more exciting.
73's G7TLA
- Wed Jan 26, 2011 7:58 pm
- Forum: Sinclair Misc
- Topic: your zx81 life story...
- Replies: 10
- Views: 8320
your zx81 life story...
Have you always been a zx81 fan? i had my first zx81, indeed my first computer way back in '81 complete with 16k rampack (the wobbly version of course ;) ) a few years later i packed the zeddy away and moved onto a commodore pet, then vic 20, had the Vic for literraly ages before aquiring a spectrum...
- Wed Jan 26, 2011 6:07 pm
- Forum: Hardware
- Topic: New Hardware Projects
- Replies: 88
- Views: 43926
Re: New Hardware Projects
excellent, work Charlie, yes i have seen the mmc thread it's come a long way in 2 years i dare say it's starting to look like a professional job, something that back in the day people would i'm sure have been happy to spend mega bucks on. you could easily make it composite output you just need to ad...