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Possibly a little OT: Exporting ROM function addresses to the Z88DKOK, so I'm using the Z88DK. It's entirely possible that some documentation has bypassed me. But assume I have a function in ROM, say, at address 0xF0…
... I have a function in ROM, say, at address 0xF00, let ... ultimately automate a method to export the ROM's symbol table into ... -
Interface rom - Need help to dump itHi, I have temporarily an interface that is similar to a multiface. It has an NMI button and displays a menu where states can be saved and pokes ent…
... an interface that is similar to a multiface. It has an ... />
It could be interesting to have the code.
rom?
Cheers ... -
Copy interface ROM content to RamHi all, I have a very rare logitec centronics and disc interface. To save its ROM content I would like to copy it Ram and store it somewhere. How ca…
... centronics and disc interface. To save its ROM content I would like ... to copy it Ram and store ... ? Small MC routine to copy from Ram area to Ram area could ... ). But How to be sure that the Interface ROM is paged in ... -
[Discussion] Planned corrections to: The Complete Spectrum ROM DisassemblyOk, folks. Since I'm not obtaining replies from those involved in the previous effort to transcribe The Complete Spectrum ROM Disassembly, I'm going …
... effort to transcribe The Complete Spectrum ROM Disassembly, I'm going to ... Table of Contents and corrections to the accompanying txt file ... http://freestuff.grok.co.uk/rom-dis/[/url] informing them ... , since this is not related to Infoseek anymore.
... -
Best way to store vector images in Sinclair BASIC?Let's forget for a moment that Sinclair BASIC is slow. If I have a picture made entirely of vector images, what would be the best way to store that d…
... picture made entirely of vector images, what would be ... data and the fastest way to display it?
< ... using non-existing coordinates to determine different things. If ... DRAW a,b and jump to the next position.
to lean different ways to do this ... -
Odd keyboard behaviour due to a single bit failure in +3 ROMI've just fixed a spanish +3, which, among normal issues (drive belt missing), presented a very strange one: the keyboard autorrepeated without a del…
... , being a bit difficult to select the desired option.
to a higher value (to add more delay from ...
I changed the ROM chips (mask ROM's manufactured by AMI ... project. The autorrepeat thing ceased to happen.
WTF??? ... -
IM2 Loading on +3EHi there Speccy Guru's, As some of you know, I've spent a while building the ultimate image for +3e, it's currently at 6000+games and demos and i've…
... onto the IM2 loading demos. These use IM2 to play music ... , I tried today to copy them to my +3e. They ... any advice on how to do IM2 loading on real hardware ... of converting these is to add it to my +3e image ... just looked into the ROM and the only interupt setting ... -
Disable interrupts?Well, I've read the bits from the David Webb book about interrupt modes and (vaguely) appreciate the principles behind having a vector table, after r…
... the principles behind having a vector table, after reading a number ... used EI, DI, IM1, IM2 etc [I]at all[/I ... the only reason you need to use them?
... I'm using the odd ROM call here and there, ... actually found a simple answer to this yet...! Maybe I ... -
Inefficient code in ROM, from ram-check to RAM-DONEHere is the inefficient code: [CODE] ;; ram-check L11DA: LD H,D ; Transfer the top value to the HL register LD L,E …
... we reached ROM - $3F ?
JR NZ,L11DC ; Back to RAM-FILL ... we reached ROM - $3F ?
JP NZ,L11DA ; Back to RAM-FILL ... : CP H ; Have we reached ROM - $0000 ?
INC HL ; ... -
Wolfenstein style games DON'T have vector graphicsCurrently in WOS database games with engine similar to Wolfenstein are categorized as vector games: http://www.worldofspectrum.org/infoseek.cgi?rege…
... with engine similar to Wolfenstein are categorized as vector games:
Vector+Graphics$&phrase&loadpics ... tape image file a ROM :)
Vector graphics are made of ... -
Would Anyone Be Willing/Able To Burn Me A RomI would Like If Possible For Someone To Burn Me A Custom 32k Rom But I Would Also Need The Chip Supplied Which Cuts Down My Chances Of Someone Being …
... Possible For Someone To Burn Me A Custom 32k Rom But I ... Chances Of Someone Being Able To Do This For Me As ... They Would Already Need To Have The Correct Eprom/EEprom ... The Difference" In Stock So To Speak If Any One Can ... -
Searching for correct Betadisk 48k TR-DOS v4.12 ROM (Save ROM via TRDOS-Prompt to Disk)Hi, I have two ROM-Files which should be read out from an original Betadisk 48 Interface TRDOS v4.12 (ROM-Size 8k). But when I compare them, they…
... 1: C8BAAEF66AB7FBF457BA76B783C02434CC5E2130
Second ROM has Checksum: SHA-1: ... no original 8k Size ROM anymore to read out, because ... was upgraded to
Vision GUI with ROM-size 16k ... The simplest way to save the ROM seems to me, when you ... -
48K Issue 3B ROM to EPROM methodsHi folks, While fixing up a completely dead Commodore PET I needed a way of testing the 4116 RAM chips that make up its 32K, some googling found a…
... to pin 27 to do the address bank switching, jumper wire from ROM ... socket pin 28 to pin 1 for ... />
Sanity check ROM burner (MQP Pinmaster 48) by ... everything back to stock (pin 1 of original ROM bent ... out so I didn't have to ... -
how to edit a romhi, i just wanted to know the best way to edit a rom. im going to do it in an emulator first and then run it in a spectrum.
hi,
i just wanted to know the best way to edit a rom. im going to do it in an emulator first and then run it in a spectrum. -
How to avoid flicking? IM2 help.Hi, I have started on a quest to make a demo for ZX Spectrum. However the display is flickering and I guess it is something about updating at…
... have started on a quest to make a demo for ZX ... /> I have read something about IM2 without understanding it in details ... give me clues/ideas how to make the code better.
start:
di ; no need to spend time reading keyboard etc ... -
Is it possible to run a single BASIC line via a ROM CALL of the Standard ZX 48k ROM?On: https://cygnus.speccy.cz/popis_trdos-assembler.php I found the following code: [code] CHADD equ 23645 ; Location of SOS variable CHADD ld…
... ld hl,(CHADD) ; Start to save true CHADD
ld ... HL ; CHADD now points to our routine
call ... /> jp BACK ; Jump to program point from which the ... ld HL,(TEMP) ; Start to restore CHADD
ld ( ... via a CALL to TRDOS/Betadisk-ROM (15619 on TRDOS ... -
type in to learn about IM2I'm trying to mess around with learning about IM2 and I found a nice little article in Sinclair User September 1988, issue 78, Page 70-71 [url="https…
I'm trying to mess around with learning about IM2 and I found ... I haven't been able to figure out what it is ... />
I am using PASMO to compile it with the string ... is going wrong and how to fix it.
Thanks ... -
Codies help? Werewolves of LondonHi All, never one for shying away from the deep end, having only just dipped my toe in to the world of machine code I find myself trying to find out …
... has been traversed to
get to one pixel row ... ploughing into the ROM. It never gets to 50549 at ... The program is in IM2 mode, as you can ... 256=186. The interrupt vector table will be located ... you should investigate why the rom calls are occurring.
Codies help? Werewolves of LondonHi All, never one for shying away from the deep end, having only just dipped my toe in to the world of machine code I find myself trying to find out …
... call an address in the ROM area?
[/quote]
... />
These days the ROM is essential for the minigame ... , all very low in the ROM.
[/quote]
vector 'supplied' by the ULA ... jump is made to a junk IM2 routine that is ...ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... 0x66 is located in the ROM.
Maskable interrupts, unlike ... Basic runs in and the ROM code at address 0x38 does ... . Since 0x38 lies in the ROM we cannot change the code ... /> IM2.LIB requires us to specify the location of the interrupt vector table ...MB02+ software and system developmentsThe following text was (before last modification) first published here: [url]http://www.sintech-shop.com/forum/board.php?boardid=20[/url] As discuss…
... to contended memory and modify value to #3B (new vector table in ZX rom ... original vector table(in ZX ram) to new table on ZX rom(only ... games (proxima software) use IM2 interrupt with vector adress #38-#3A in ...MB02+ software and system developmentsThe following text was (before last modification) first published here: [url]http://www.sintech-shop.com/forum/board.php?boardid=20[/url] As discuss…
... register I is set to same values as high ... (proxima software) use IM2 interrupt with vector adress #38-#3A in ... If register I is set to range #38-#3A then ... is need modify value to correct #3B (games will ... copy of the original 48K ROM as your default BASIC, ...48K games that don't work on a +2Not sure if there is already a thread about this but recently I've noticed some old 48K games will not run on my +2 - even in 48K mode. Examples are…
... a simple IRQ vector table when using IM2. This way it ... The original 48K ROM is different to the 48 ROM on 128 machines ... NMI routine in the ROM to make sure it hadn' ... way to get around this is to use a ROM replacement ... in the 128 ROM is likely to crash on a ...Channels and streamsSo I've put some thought into channels and streams, and read the dead (and presumably rotting corpse) of the CSS FAQ which contains some information …
... c, whether in paged ROM or loadable in RAM ... a wrapper around the ROM entry points, the assembler ... the functions in ROM that allow streams to work. The ... one has to recompile/reassemble code if the ROM gets ... proper IM2 support, with the CPLD dropping a vector on ...Beepola Source CodeAs I haven't done much with it for a few months, I'm releasing the Beepola source code in case anybody wants to play about, add to, or otherwise use …
... speccy memory image with the ROM (if needed by the player ... for the player routine to use (0 to 7 inclusive)
// IN ... use IM2, this is the desired location of the
// interrupt vector ...Help Wanted: Playtest BUGFIXED games!There's an ongoing effort at WoS to fix classic Spectrum games with serious bugs that make them impossible to complete, crash frequently, etc. More d…
... you please provide a way to make the two non-working ... release for IM2 table I=#39 ; not work on +3 rom
I corrected vector for IM2 and crash helicopterHelp Wanted: Playtest BUGFIXED games!There's an ongoing effort at WoS to fix classic Spectrum games with serious bugs that make them impossible to complete, crash frequently, etc. More d…
... release for IM2 table I=#39 ; not work on +3 rom
I corrected vector for IM2 and crash helicopter[/QUOTE]
to find it myself. The proper ... updating the "known errors" description to describe your original fix instead ...How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... keep calling that particular ROM routine every 20ms. ... in high memory) to put the stack. And ... vector table from 65024-65280 (set I=254 in IM2 to ... use it) full of 253s, which in IM2 directs the jump to ... PUSH goes to 65534) or to 65535 to avoid over ...How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... 't keep calling that particular ROM routine every 20ms. You'll ... interrupt vector table from 65024-65280 (set I=254 in IM2 to use ... it) full of 253s, which in IM2 directs the jump to ... the first PUSH goes to 65534) or to 65535 to avoid over-writing ...
