Search found 41 matches
- Sun Nov 05, 2023 5:45 pm
- Forum: GAMES
- Topic: New ZX81 Games
- Replies: 389
- Views: 718072
Re: New ZX81 Games
GOL doesn't run, neither on an ZX81NU nor on the EO.
- Sun Jul 30, 2023 7:41 pm
- Forum: Hardware
- Topic: ZX81 with vertical hold issues?
- Replies: 30
- Views: 3623
Re: ZX81 with vertical hold issues?
Did you try to adjust the vertical frequency by the potentiometer at the backside of the TV?
- Sat Dec 10, 2022 4:27 pm
- Forum: Hardware
- Topic: ¿A Jupiter Ace clone kickstarter?
- Replies: 6
- Views: 3524
Re: ¿A Jupiter Ace clone kickstarter?
@wilco2009: Is it possible, to get a copy of the test rom?
- Mon May 30, 2022 7:27 pm
- Forum: Hardware
- Topic: Would it be possible to run H4th on a ZX80?
- Replies: 11
- Views: 2186
Re: Would it be possible to run H4th on a ZX80?
Here is the echo printer command (taken from Husband's manual):
- Mon Jan 03, 2022 6:51 pm
- Forum: Hardware
- Topic: Harlequin 48K Rev. G - First Time Power Up
- Replies: 19
- Views: 5542
Re: Harlequin 48K Rev. G - First Time Power Up
If you can't burn a 27C128 and want to use an EEPROM instead of this, I would like to recommend the W27C512 wich is pin compatible with the 27C512 or 27C256, 27C128.
- Sat Sep 25, 2021 12:09 pm
- Forum: Spectrum BASIC
- Topic: Bitwise AND
- Replies: 2
- Views: 8841
Re: Bitwise AND
Hi, I am trying to convert a 16 bit integer to two 8bit numbers. I tried : LET vh=65280 AND value : LET vl=255 AND value I am getting it wrong I think. I checked the ZX BASIC manual and seems like AND is not for this purpose. vh is giving me 2 when I use 2 as the value variable. How do I do this ? ...
- Mon Sep 13, 2021 4:43 pm
- Forum: Hardware
- Topic: UM1082 modulator scheme
- Replies: 0
- Views: 1686
UM1082 modulator scheme
Does somebody have the scheme of the UM 1082 modulator? This modulator is used in the ZX81 USA.
- Mon Sep 13, 2021 1:15 pm
- Forum: WANTED
- Topic: UM1082 modulator
- Replies: 2
- Views: 21842
Re: UM1082 modulator
Does somebody have the scheme of this modulator?
- Wed Sep 08, 2021 11:27 pm
- Forum: Hardware
- Topic: What do I use for a screen for my zx spectrum
- Replies: 3
- Views: 2146
- Tue Aug 24, 2021 11:33 am
- Forum: Hardware
- Topic: Printer heads misalignment?
- Replies: 8
- Views: 2048
Re: Printer heads misalignment?
@moggy: Is there a horizontal moving heat head or is there just a line of 256 heat "hooks" (one for each pixel)? Could you show a more detailed picture around the printing unit? The first picture in https://sinclairzxworld.com/viewtopic.php?p=43887#p43887 seems to prove that there are even two movin...