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Help understanding some z80 asmI'm trying to work out how to represent the structure of a "sprite" in the SAM as "Grabbed" by SmallC. I can see the assembler implementation but I …
... address bus can't transfer data, and the address bus ... device with a 16-bit data bus, you need some ... receive the 16-bit wide data from the device, then ... with a 16 bit external data bus - for example, the ... read the upper half of the address bus AND the data ... -
Spectrum Issue two problemI managed to bring back to life a issue two spectrum (at least the power supply cirquit). The screen is now crystal clear (after replacing all the el…
... most chips die with the data bit either set to 1 ... power it would tie a data bus bit down (0 to ... weren't.
I read somewhere on the forum that ... -
"chunky" gfxHas anyone some experience with coding "chunky" gfx routines ? (chunky is something like this [url]http://www.pouet.net/prod.php?which=13204[/url])
I guess this is the sort of thing I miss when I refuse to read other people's code and insist on working things out for myself.
Using the RET instruction for reading in data? Awesome :) -
Little character trouble with BASinWell, I'm having some trouble loading fonts into the speccy with BASIC, using BASin r13 for an easier job. When I run code, such as this example... …
... the Spectrum ROM, this is READ ONLY MEMORY. You should be ... 64767: READ A: POKE F,A: NEXT F
70 DATA 0 ... ,0,0,0
80 DATA 56,44,44,44,60 ... -
Little character trouble with BASinWell, I'm having some trouble loading fonts into the speccy with BASIC, using BASin r13 for an easier job. When I run code, such as this example... …
... 64767: READ A: POKE F,A: NEXT F
70 DATA 0 ... ,0,0,0
80 DATA 56,44,44,44,60 ... ][/QUOTE]
When the data starts at 64000 you should ... -
RetroGammer magazzine!yesterday I got my first retro gamer magazine(the one that has street fighter on the cover)...and WOW! I didnt knew they imported that magazine to Po…
... /> The article about Data East's title read "From Deco Cassettes to ... Robocop a complete history of Data ... sentences on Robocop (one of Data Easts most popular games), ... no pictures and while Data Easts work with Nintendo got ... -
RetroGammer magazzine!yesterday I got my first retro gamer magazine(the one that has street fighter on the cover)...and WOW! I didnt knew they imported that magazine to Po…
... /> The article about Data East's title read "From Deco Cassettes to ... Robocop a complete history of Data ... sentences on Robocop (one of Data Easts most popular games), ... no pictures and while Data Easts work with Nintendo got ... -
Question about digitized sound and videoI searched the forums and couldn't find the answer, so here it goes. Regarding digitized sound: I remember reading an article long ago about a vid…
... should be: 25 fps.
Data transfer rate is 175KB/sec ... card with simple program to read sectors in order. -
2007, and still no NIC and browser for the Speccy?I've started to read all the w.o.s. threads, starting by the ones that came up with the search function, using the keywords of the topics that intere…
... />
ROM2 NS
\ Data
RAM HERE \ used ... socket" \ 5
,S" Excess data" \ 4
,S" Error writing ... DUP R@ + 4095 R@ - ihdl READ-FILE DROP
?DUP IF ... -
I/O contention model questionHi everyone, Sorry for my poor english. Together with a friend we are working on ZX Spectrum 48k implemented in FPGA. We have found bug in the Spect…
... _writing into ULA_. (because data from Z80 is valid during ... be right as Z80 probes data bus during T3 (fourth ... end of T3. The data is put out early ... During a read, i/o peripherals put data on the data bus anywhere ... This ensures that the data driven on the bus ... -
Death of the Computer Science DepartmentRead this article on the death of the computer science department in universities by Neil McBride from De Montfort. It makes very interesting (and wo…
... and like most of the data structure courses is a throwback ... years ago, I can't read this without responding.
read the Arthur C. Clarke thread ... -
I/O contention model questionHi everyone, Sorry for my poor english. Together with a friend we are working on ZX Spectrum 48k implemented in FPGA. We have found bug in the Spect…
... want to read memory. ULA puts on the bus proper data (from ... cycle. ULA is about to read from memory. It doesn't ... -
Death of the Computer Science DepartmentRead this article on the death of the computer science department in universities by Neil McBride from De Montfort. It makes very interesting (and wo…
... is obviously O(n) - more data takes more space and thus ... of N. Performing a sequential read remains a constant time operation ... -
Death of the Computer Science DepartmentRead this article on the death of the computer science department in universities by Neil McBride from De Montfort. It makes very interesting (and wo…
... of physical space occupied by data is proportional to the amount ... of data being stored. In order to ... any random point within that data we have to move the ... , thus the time to read arbitrary data from disk is proportional to ... -
Death of the Computer Science DepartmentRead this article on the death of the computer science department in universities by Neil McBride from De Montfort. It makes very interesting (and wo…
... , thus the time to read arbitrary data from disk is proportional to ... -
Death of the Computer Science DepartmentRead this article on the death of the computer science department in universities by Neil McBride from De Montfort. It makes very interesting (and wo…
... , thus the time to read arbitrary data from disk is proportional to ... -
Death of the Computer Science DepartmentRead this article on the death of the computer science department in universities by Neil McBride from De Montfort. It makes very interesting (and wo…
... of physical space occupied by data is proportional to the amount ... of data being stored. In order to ... any random point within that data we have to move the ... , thus the time to read arbitrary data from disk is proportional to ... -
Question about digitized sound and videoI searched the forums and couldn't find the answer, so here it goes. Regarding digitized sound: I remember reading an article long ago about a vid…
... />
And original thread to read up on the details:
data on ram. The BASIC program ... -
USB Hardrive enclosures.I have invested in a USB hardrive enclosure and a 40Gb laptop hard-drive as my USB stick was bulging at the seems. Now these devices power and run t…
... now. You will corrupt the data the drive was writing at ... prevent you from losing any data if you ungracefully remove the ... days. From what I have read about such things both XP ... -
Plus-D drives...Can anybody recommend somewhere that I might be able to find a 3.5" drive which would work with the +D interface? (I'm doubting that just any 3.5" d…
... HD PC floppies, they can read low density disks.
read HD formatted disks, so you ... they seem to hold there data for longer. -
help needed...Hi there, i'm trying to figure out a possible typo in William Tang's 'Spectrum Machine Language for the Absolute Beginner' on page 23 there's a prog…
TommyGun 0.9.x updates** Should be available via the utilities page soon! Please be patient :-) ** I'll be posting all future updates in this thread, instead of creating …
... .
Don't forget to read the documents installed in the ... convert the XML into raw data for importing into my program ...TommyGun 0.9.x updates** Should be available via the utilities page soon! Please be patient :-) ** I'll be posting all future updates in this thread, instead of creating …
... how I get the raw data out of TG. I'm ... the resources images/maps/sounds/strings etc into source code.
If a C64 can do it...Forgive me if this isn't the right section. We've seen coders surprising us over and over again with excellent demos and things that a few years ago…
... space, the small size of data types, the importance of ... specific addresses. Ie POKE address,data in Basic. All Basic ... libraries in Spectrum C implementations. Strings in basic consist of a ... for memory addresses and writing data to an address "pointed ...Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…
... the tile that disappears get read as the screen is drawn ... just straight into the map data. Here's [url=http://download ...Feel my pain......or sit back and laugh yourself sick. Recently upgraded to XP Pro. Getting intermittent crashes/reboots - nothing in event manager. OK reinstall …
... .[/B]
Think I read somewhere that Nvidia drivers cause ... - 4 days. I found some data no one seemed to want ...Zx Spectrum Laptop (again)I've been reading all the old treads about a possible portable speccy. I even found the one about the Speccy Laptop. But it seems there's a lot of ne…
... cycles). For an i/o read/write you'd have maybe ... bunch of reflections on the data bus, unless the drivers can ...Cybernoid editorSo, my long tern goal is to make my own Cybernoid or Rex like game (see an ancient thread about Sprite advice)...but my skills are somewhat lacking..…
... searching backwards through the map data and using #C9 as an ... is just before the map data. I`ve got it down ... work on all the map data and not each level, which ... machine code book i've read! (other than magazines YS/SU ...Dead Spectrum +Hi all, I've recently dug out my old Spectrum + with the idea of repairing it. When I last looked at it, when I was much younger, I was soldering a …
... RAM is merely returning bad data when read - if there's a ...
