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Confounded DEF FNCan anyone see why this is going wrong? I've been tinkering with it since tea time and got nowhere. [code] 2 DEF FN t$(n,t,d) =STR$ INT (n/t)…
... /> sla d ; shift BCD 1 bit left
rl c ; ... and move LH-bit to Carry
rl b ... ,a ; so do a 16-bit comparison
and a ; ... -
Hardware description - PLUS D interfaceThis new thread will contain onformations of different ZX devices. Some devices contain manuals, schematics or firmware for some chips, but some peop…
...
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bit 0 = drive 1
bit 1 = drive 2
bit 6 = strobe ... (printer)
bit 7 ... the printer port (only one bit on D7 line)
Control ... -
Hardware description - PLUS D interfaceThis new thread will contain onformations of different ZX devices. Some devices contain manuals, schematics or firmware for some chips, but some peop…
... /> bit 0 = drive 1
bit 1 = drive 2
bit 6 = strobe
bit 7 ... -
Hardware description - PLUS D interfaceThis new thread will contain onformations of different ZX devices. Some devices contain manuals, schematics or firmware for some chips, but some peop…
... .
Drive2 is connected to bit 1, bit 7 is controlling the side ... -
Mirroring UDG'sJust wondered is there a quick an easy way of mirroring UDGs (byte values)? i.e. BIN 11110000 becoming 00001111 etc.
Literally zillions of similar bit hackery lives here:
[ ... /> unsigned int v; // 32-bit word to reverse bit order
v = ((v >> 1) & 0x55555555) | ((v & 0x55555555 ... -
Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... of which are: Sync/0 bit/1 bit signal duration (T states), Header ... ROM loader compares '0' and '1' bits with a single threshold ... -
Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
[QUOTE] I've had a bit of trouble with both strategies ... , we've got a few 1-bit errors screwing up things:
Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
Corrupt paper on zx spectrum 48kHi. When I power up my spectrum (issue 3) I get the light grey border, but the paper is black and it switches between thin red vertical lines and thi…
... RAM) is made from eight 1 bit x 16k chips. Each chip ... locations but only stores one bit. The eight chips combined make ... , but these are 32k x 1 bit chips (and only need a ... be replaced with 64k x 1 bit chips.
The two ...New game: The Speccies.Okay, it's finally out. :D [URL="http://tardis.dk/wordpress/?page_id=1011"][IMG]http://tardis.dk/retro/speccies/images/LogoSmall.png[/IMG][/URL] [U…
... and when put into a 1-bit packaging it sounds the same ...Wow! This is really a staggering achievement (programming, but still interesting!)The subject of good/clever programming came up in the SE BASIC topic, and I thought I'd mention this, but then that thread went back on topic (er, no…
... TOS is probably a little bit bloaty, although not by nearly ... going to use much space (1 bit per pixel. EDIT: Probably 2 ...Wow! This is really a staggering achievement (programming, but still interesting!)The subject of good/clever programming came up in the SE BASIC topic, and I thought I'd mention this, but then that thread went back on topic (er, no…
... going to use much space (1 bit per pixel. EDIT: Probably 2 ...Wow! This is really a staggering achievement (programming, but still interesting!)The subject of good/clever programming came up in the SE BASIC topic, and I thought I'd mention this, but then that thread went back on topic (er, no…
... going to use much space (1 bit per pixel. EDIT: Probably 2 ...Issue 3 board with strange piggy-back boardIn case you are interested. I?ve never seen something like this before. I have an Issue 3 board here. When I opened the case and found a strange pig…
are 4164's the same as mt4067-12just wondering if I can use as direct replacements as I have a +2a here with ic5 and ic4 overheating, also what are the correct voltages for these ic…
... -15P (or equivalent) 64k X 1 bit DRAM chips.
The black ... (or equivalent) 64k X 4 bit DRAM chips.
From ...I've put my chip tune remixes on SoundCloud[url]https://soundcloud.com/cheveron[/url] Bought a new set of cans since I did the original mix. Also upgraded to OS X 10.9 and got the latest Gara…
... establish a forum about Beeper/1-bit music (mainly on Spectrum but ...I've put my chip tune remixes on SoundCloud[url]https://soundcloud.com/cheveron[/url] Bought a new set of cans since I did the original mix. Also upgraded to OS X 10.9 and got the latest Gara…
... establish a forum about Beeper/1-bit music (mainly on Spectrum but ... I haven't done any 1-bit music in an age, and ...I've put my chip tune remixes on SoundCloud[url]https://soundcloud.com/cheveron[/url] Bought a new set of cans since I did the original mix. Also upgraded to OS X 10.9 and got the latest Gara…
... establish a forum about Beeper/1-bit music (mainly on Spectrum but ...SWIV digitised speech as easter egg?I read in the permission from one of the authors of the game that the game had a "easter egg" with a speech from Aliens. I have never tried it myself…
... need to send a beeper bit every 1/8000 of a second ... treats the beeper as a 1 bit DAC -- it's either ... : each channel has 4 bit resolution so it's easy ... to do four bit samples, simply by controlling ... that can approximate a 7 bit dac output. There are ...RoguelikeI made a 1 bit tile set for a roguelike game, and then I made a Spectrum mockup. My colour choices are terrible, but if you want to code a roguelike…
... been developed to color in 1 bit maps you could make in ...Beeper Music DemoThis demo includes four original tunes made with Shiru's excellent Tritone engine, authored in Beepola between Christmas and New Year. I've used FZX…
Ah, I wouldn't know, as we have 9 channels on the 1-bit.
So surely I do not complain. :)Pseudo-3D map renderingHave been mulling this over for a while, until that isometric thread prompted me to ask. I'm not sure if this is officially classed as 2D, 2.5D, or 3…
... top half is superimposed over 1 character of the wall. He ... /> My thinking now is that 1 bit of the tile could indicate ... in that square, and another bit could indicate whether it's ...Which Emulator supports Betadisk48?Hi out there and happy new year, I'm looking for an emulator to run with my vision1.7 trdos-rom in 48 mode. Unfortunately most emus only support Bet…
... up?)
Bit 5 - Not used.
Bit 6 - If = 1 disables DOS ... area 3C00h - 3CFFh).
Bit 7 - If = 1 disables I / O interface ... . It should be kept at 1.
Bit 3 - Pin HLT controller ... . It should be kept at 1.
Bit 4 - SELECT SIDE of ...Pseudo-3D map renderingHave been mulling this over for a while, until that isometric thread prompted me to ask. I'm not sure if this is officially classed as 2D, 2.5D, or 3…
... /> My thinking now is that 1 bit of the tile could indicate ... in that square, and another bit could indicate whether it's ...mirroring bitsIf I have a string of 1408 bytes, each of which has one bit 'b' set, what's the shortest way of mirroring that string, so that each bit set at positi…
[QUOTE=Dr BEEP;747557]Just a quick look:
Where is here the mirroring for i.e. 10101111?[/QUOTE]
There is a restriction in the input, one 1 bit and seven 0 bits, so only 8 of 256 values are legal ($01, $02, $04, $08, $10, $20, $40, $80).mirroring bitsIf I have a string of 1408 bytes, each of which has one bit 'b' set, what's the shortest way of mirroring that string, so that each bit set at positi…
[QUOTE=antoniovillena;747561]There is a restriction in the input, one 1 bit and seven 0 bits, so only 8 of 256 values are legal ($01, $02, $04, $08, $10, $20, $40, $80).[/QUOTE]
Ok, didn't know that!SpecBAS 0.800 Released!Hi folks, it's that time again for another release. I was going to add a few more features, but I have other projects on the go at the moment, and it…
... control that older hardware (a 1 bit per pixel screen with attributes ... ensured that UDGs would be 1 bit per pixel) those commands made ...SpecBAS 0.800 Released!Hi folks, it's that time again for another release. I was going to add a few more features, but I have other projects on the go at the moment, and it…
... control that older hardware (a 1 bit per pixel screen with attributes ... ensured that UDGs would be 1 bit per pixel) those commands made ...
