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Adding TAP loading to the +3e ROMHello my fellow WoSers I have decided that I want to make my project official so I can share its development with you all as well as get some help i…
... the disk system involves +3DOS to reserve some memory pages (initially, 1 ... 4 and 6, if my memory serves well). 128K programs loaded ... to load code/data into +3DOS reserved pages, which will be trashed ... I read about the reserved pages used by +3DOS and modified my ... -
Converting m$ to dataI created a maze using a matrix of 704 characters. In order to save memory, and since the maze it's just walls and spaces which could be interpreted …
... characters. In order to save memory, and since the maze it ... characters into 88 bytes of reserved memory area (e.g. just below ... -
Machine CodeHi all, I want to get a machine code/assembler/dissasembler program from the WOS archives. But what in your opinion would be the best to get? I don`t…
... it will leave the 128K reserved memory alone. -
Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…
... going to be calling +3DOS to load in code ... trying to read files with +3DOS into memory.
The ... 2 (according to the +3DOS memory config), but i would ... then after returning from +3DOS, page in 3/4/ ... is unavailable when calling +3DOS, as 7 is paged ... -
c64 .sid player coming soon to specy 128!!!c64 .sid player coming soon to specy 128!!! the first old version uses only square waves, 4 years ago: https://www.youtube.com/watch?v=6CKt9noxA7s…
... may be also problem with +3DOS reserving memory in bank7. I have ... of code to clear the +3DOS cache. It might be needed ... -
What memory pages are being used in a +3DOS disk operation?To make a long story short: what pages are in use by +3DOS while doing read operations from the disk drive? Now, for the details, for those interest…
... are in use by +3DOS while doing read operations from ... block is loaded into main memory, and then, the ... be loaded in "extended" memory. To avoid side effects, ... 7 is used by +3DOS (as stated in the ... use nearly all the available memory in all pages) succesfully? ... -
Utility to read/write to memory cards formatted for +3EThis post comes from [url=http://www.worldofspectrum.org/forums/showthread.php?t=25658]this thread[/url]. I've released a small command-line utility…
... them into a +3DOS partition inside the memory card or HDF file ... for handling +3E formatted memory cards without having to deal ... memory card / disk image.
- Files can have a optional +3DOS ... header added upon writting to the memory card / ... -
Extended memory and SNApshots in emulatorsExist any snapshot fileformat that support extended memory for ZX (clones) ? I see only Z80 fileformat with 48/128 and 256kB(ZS Scorpion 256) support…
... snapshot fileformat that support extended memory for ZX (clones) ? I ... /> [B]16-127 = unused / reserved for next zx clones[/B ... STEALTH" support save extra memory in Z80 files (contain added ... one file with length = zx memory size(uncompressed raw) + additional ... -
RAM used / corrupted by +3DOSAs I said previously, [url=http://www.worldofspectrum.org/forums/showthread.php?t=41775]I'm trying to put some games in hard disk[/url] so they can b…
... is used as "scratch" in +3DOS, but I don't think ... use some "empty" spaces in memory to store all data from ... fine... in most cases screen memory can be used as a ... -
A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…
... loader for 128k games in +3DOS.
[CODE]dos_open ... /> call paginar ; page ROM2/RAM7 (+3DOS configuration)
; disable ... in $c000
; 6..3 Reserved
; 7 1=end of ... ; 2 bytes starting address in memory
; 2 bytes data length ... -
48K Memory MapHi, I'm having some trouble understanding the top of the 48K Memory Map. From reading elsewhere I have this as the memory map: 0 to 16383 - …
... the top of the 48K Memory Map.
From ... 0 to 16383 - Read Only Memory
16384 to 22527 - Display ... to 23754 - Reserved
23755 to 65367 - Available Memory
65368 ... area '23755 to 65367 - Available Memory'
Also what ... -
how can we load +3dos files in assembly?is there some way to load +3dos files in assembly, like calling bios routines somewhere? (like defining in registers the filename string address in m…
is there some way to load +3dos files in assembly, like calling bios routines somewhere? (like defining in registers the filename string address in memory, loading location, size, etc., and call the routine that loads it?) -
+3 rom disk load/save routines?I`ve been looking everywhere for some documented listing of the +3 rom load/save routines. I want to convert some games to use disk instead of tape.…
... problem of loading to memory normally reserved for +3DOS. I did almost the ... -
IF EXIST?In MS-DOS scripting, there is an IF EXIST command that lets you check wether a file exists in disk or not. There are any way to check it out from BA…
... .
Note that +3DOS format disks (which are the ... br /> bits 1...7 = 0 (reserved)
DE = Address of buffer ... [/url] )
[CODE]Calling +3DOS from BASIC
When ... is entered
with the memory configured as illustrated below (left ... -
A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…
I guess I'll keep with file #5.
Using file number 0 doesn't free memory (it seems that +3DOS always have memory reserved for 15 opened files), and loading 0 in b uses the same memory than loading another value. -
Memory usageBrowsing the online documentation for the Spectrum I came across a peculiar discrepency. As we all know the start of the RAM is at 16384 which is whe…
... is where the screen memory resides. The screen memory ends at 23296 ... is what on earth the memory before KSTATE and after the ... video memory is used for on a ... -
128 Memory PagingI'm having a problem getting my brain around paging. Well, actually the bit I don't understand is how reading I/O ports works! I hope the collective …
... />
Port 32765 controls the memory paging. Bits 0-2 determine ... -
ZX80/81 memory expansion and 48k + Lightpen for saleAll are in original packaging and the lightpen has it's software and manual. The memory expansion is a 16k one. E-mail me at [email="patrick@wych01…
All are in original packaging and the lightpen has it's software and manual.
The memory expansion is a 16k one.
E-mail me at [email="patrick@wych01.freeserve.co.uk"]patrick@wych01.freeserve.co.uk[/email] if intrested.. -
memory is filled up under Win XP when opening many filesDear friends, I have the big and strange problem that ZX-Rainbow's game scanner is not working properly under Windows XP. I figured out (during a ti…
... in the virtual memory), so that the memory is filled up with ... the file stream, freeing the memory.
I wrote another testing ... the complete file content in memory.
The problem does ... -
Memory Available for 16k and 48kAm I right in thinking that if I am writing a 16k Game, I have 8k available for the machine code prog 6000h to 8000h, and for a 48k game I have 40K a…
... /> If so, what are the memory areas available for 16k and ... -
Strange layout of Spectrum video memoryHello, does anyone have an idea why the Spectrum's video memory has such a strange layout? I understand that a resolution of 256x192 is an easy mean…
... why the Spectrum's video memory has such a strange layout ... it easier to address video memory. I also understand that the ... ) are a compromise to limited memory. But where does the line ... -
what extra port for extra memory ? (256K, 512K, 1024K, etc.)I know that Pentagon uses some extra bits from port 7FFD for extra memory pging: - for 512K model, bit 6 & 7 of port 7FFD - for 1024K model, bit 5, 6…
... from port 7FFD for extra memory pging:
- for ... those bits for extra memory switching and if it ... / port DFFD for extra memory paging.
What is ... keep track of a memory bank number, by combining ... established port for extra memory, other than the Pentagon ... -
SPIN - debugger / fill memory / how ?I try to fill the screen with 00 value, but I don't get the expected result. - pause the game - debugger - hex numbers - fill memory block - fill wi…
...
- hex numbers
- fill memory block
- fill with 00 ...
- main memory
- start address - 4000
- ok
then
- view memory
- all screen data is ... -
Data at the top of memoryWhilst viewing memory locations on the "Spin" emulator I noticed data starting at 65336. Does a "real" ZX Spectrum 48k use the top end of available m…
Whilst viewing memory locations on the "Spin" emulator I noticed data starting at 65336. Does a "real" ZX Spectrum 48k use the top end of available memory ? If so, what is the last memory location that is safe to use ? -
Emulator Dev: Memory Use When Loading RZXsHi, I am currently working on a port of an emulator to a system with limited memory (64mb). I am running out of memory when loading large snapshots …
... to a system with limited memory (64mb). I am running out ... of memory when loading large snapshots (ie ... let me know how much memory is needed to decompress a ... -
Remember the old Chewits Advert?Just wanted to share with me the memory.... He ate the Taj Mahal, he ate the Empire State building, he ate the Leaning Tower of Pisa.....He's eating…
... to share with me the memory....
He ate the ... that dodgy New Yoyk accent, reserved for N.Y hookers and ... -
Interface 1 Memory Map(I'm not sure which section this post should go in, but here seems as good as any) Since the Interface 1 ROM is only 8k long, does anyone know what …
... appears in the 8-16k memory range when IF1 is paged ... -
Wanted: Gamecube memory cardI'm looking to buy a gamecube memory card. I don't need a large capacity memory card but a card that can save information for upto 3 games will do. I…
... looking to buy a gamecube memory card. I don't need ... a large capacity memory card but a card that ... they own or a used memory card (in working condition of ... -
Emulator with ability to watch memory?Hi! I'm looking for an emulator that can give me a realtime update of an address in memory. I've tried Fuse (on OS X) where I can set a breakpoint i…
... update of an address in memory. I've tried Fuse (on ...
