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Assembler intricaciesHi all, I've been looking at the internals of a game to see how it all works and I've found some things that I don't understand and can't find any i…
... addressed by the WORKSP System variable and is used by the ... routines as a scratch pad area. On a default 48K it ... -
Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... are now. The system variables area was also meant to grow ... size for each channel is variable length and could include buffers ... organization to splot a 16x16 area on screen:
[code ... -
Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... Anonymous;511112]The system variables area was also meant to grow ... size for each channel is variable length and could include buffers ... organization to splot a 16x16 area on screen:
TOTAL = 704 ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... in specified by a system variable. So we'll trap that ... a channel in the CHANS area, putting a vector in there ... -
Recommend a dev environmentIt's been a while since I last wrote any Z80 assembler - must be over 20 years, and since I wrote any spectrum Z80 assembler more like 25 years. I n…
... to separate the variables area from the code area. By hand this ... need to place the seed variable in RAM someplace. Doing this ... -
RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... ; so look at the system variable PROG
dec hl ; ... l_on_l:
and %00001111 ; mask area used by new character
and %11110000 ; mask area used by new character
and %11110000 ; mask area used by new character
SAVEing without waiting for keypresshello, here's question for y'all. is there a way in BASIC to bypass the "Start tape, then press any key" prompt when SAVEing an array? sorry if it'…
... routine to search the VARS area to find where the array ... the "[thread=31188]Location of variable[/thread]" thread a while ago ...how can we hack a .sna for infinite lives?recently, i were trying to edit .sna from Chuckie Egg on a hex editor, with the information from [url]http://www.the-tipshop.co.uk/cgi-bin/info.pl?na…
... MERGE because its VARS area contains a variable with a supposed length ... was saved with an invalid variable length as a hacking protection ...SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…
... /> ; so look at the system variable PROG
dec hl ; move ... start of
; the channels area and the start of the ...Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
... address in the CHANS area to call the keyboard ... about the separate variables area used by user-defined ... I knew how the DEFADD area was laid out. I ... not zero it scans that area first before checking VARS, ... from a non-existent string variable which I'd defined ...Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
... s an example of a variable function using this BASIC "swift ... set up the dummy DEFADD area, allocated in line 30, ... up to two (optional) string variable definitions (destination & source). If ... section of the dummy DEFADD area is assigned an invalid code ...Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
... VARS is called from Scanning Variable which will call Slicing ... /> * For the LH destination variable LOOK-VARS is called from ... will call Slicing from Stack Variable.
However, if ... found in the DEFADD area then Stack Variable is not called, because ...Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
... VARS is called from Scanning Variable which will call Slicing ... /> * For the LH destination variable LOOK-VARS is called from ... will call Slicing from Stack Variable.
However, if ... found in the DEFADD area then Stack Variable is not called, because ...Something impossible has happened.Scientists have discovered a new force emitting from the core of the Sun. It is responsible for accelerating the decay rate of matter. It has been …
... interesting to nuclear physicists, an area of mine that I keep ... do you gauge a supposed variable (gravity) from a constant (light ... (light) is a variable (light) when measuring that variable (gravity) =)
Something impossible has happened.Scientists have discovered a new force emitting from the core of the Sun. It is responsible for accelerating the decay rate of matter. It has been …
... interesting to nuclear physicists, an area of mine that I keep ... do you gauge a supposed variable (gravity) from a constant (light ... (light) is a variable (light) when measuring that variable (gravity) =)
Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... /> ; so look at the system variable PROG
dec hl ; move ... start of
; the channels area and the start of the ...Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... UDGs and TOKENs, clears the area of screen you're about ... /> ; so look at the system variable PROG
dec hl ; move ... start of
; the channels area and the start of the ...OpenSE Software CompatibilityWith the earlier Open82 project a page was set up on Wikia ([url]http://scratchpad.wikia.com/wiki/Open82[/url]) with compatibility information on var…
... its UDGs in a different area. A well written program would ... the UDGs from the system variable and load them there, so ... the value of the system variable.
[quote]I expect ...OpenSE Software CompatibilityWith the earlier Open82 project a page was set up on Wikia ([url]http://scratchpad.wikia.com/wiki/Open82[/url]) with compatibility information on var…
... its UDGs in a different area. A well written program would ... the UDGs from the system variable and load them there, so ... the value of the system variable.[/QUOTE]
Of course ...fast font engine possible?inspired by the recent "proportional font" thread for zx basic and ideas for gui and having done some of the work on this in the past i wonder if it …
... all telephone numbers are variable length with variable length area codes. For example ...fast font engine possible?inspired by the recent "proportional font" thread for zx basic and ideas for gui and having done some of the work on this in the past i wonder if it …
... all telephone numbers are variable length with variable length area codes. For example ...GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…
... /> ; so look at the system variable PROG
dec hl ; move ...
and %11110000 ; mask area used by new character
and %11110000 ; mask area used by new character
and %00001111 ; mask area used by new character
Storing and displaying attributes...Hi Folks, I have a requirement to store and then redisplay a line of attributes from the screen. For example: 100 DIM a$(1,32) 110 LET line=10 120…
... -variable; it doesn't take up any space in the VARS area ... it's in the attributes area. Any string letter can be ...Storing and displaying attributes...Hi Folks, I have a requirement to store and then redisplay a line of attributes from the screen. For example: 100 DIM a$(1,32) 110 LET line=10 120…
... -variable; it doesn't take up any space in the VARS area ... it's in the attributes area. Any string letter can be ...Storing and displaying attributes...Hi Folks, I have a requirement to store and then redisplay a line of attributes from the screen. For example: 100 DIM a$(1,32) 110 LET line=10 120…
... -variable; it doesn't take up any space in the VARS area ... it's in the attributes area. Any string letter can be ...Calculating free memory...Hi Folks, I am using the following method to calculate the amount of free memory available to BASIC: [CODE]PRINT 65536-USR 7962[/CODE] Is this the…
Arjun used wrong system variable. He didn't checked Spectrum ... things after BASIC area. "Last" memory map system variable is STKEND
MicroSpeech Entry PointsHello Hardware Guys, Do any of you have any information regarding the MicroSpeech ROM. In particular: 1) Do you know what addressess cause it to p…
... The ROM searches the variables area during every interrupt and buffers ... /> [*]Would parsing the VARS area 50 times a second not ...
[*]Could the VARS area not be in an indeterminate ... the VARS area (or below) are being relocated/a variable being added ...MicroSpeech Entry PointsHello Hardware Guys, Do any of you have any information regarding the MicroSpeech ROM. In particular: 1) Do you know what addressess cause it to p…
... another sysvar at work during variable assignment which, when set, tells ... ROM to skip the variables area search for that interrupt. But ...
