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Great to be back....and with fun to comeHi all, 1982: I bought a new 16k issue 2 in 1982, eventually got microdrives and a dktronics keyboard (version 1). Built a home made eprom programme…
... so I could modify the rom, and used the Spectrum running a home ... business.
Z80 was the processor we used extensively at ... has amazed me is the possibilities with the Spectrum these days.......clearly ... fun I'm taking the schematic for the Issue 3 and ... -
New interfaces coming upWell, new versions it should say. The postman just delivered this months Seeedstudio order: [IMG]http://benophetinternet.nl/hobby/vanmezelf/SAM_0620…
... !
The large black boards are the PlusDlite boards, v2014 ... was having problems with the development of the CPLD and decided to ... Spectrum +2A/+2B/+3 because the ROM selection option is present on ... -
Spectrum 128 Pre-production machinesHope aowen doesn't mind the crosspost from c.s.s, but I thought this was worthy of a thread over here: [QUOTE]A member of the Spectrum 4 Ever group …
... I assisted with the extraction of the ROM and it's labelled ...
ROM 0 is the same as the Spanish ROM 0 except for the copyright ... ROM 1 is the same as the original Spectrum ROM except for the copyright ... machine with a later ROM featuring the menus. I'm ... -
Simple text scrolling routine...I'm having trouble writing a very simple text scroller, the idea is to use the ROM printer routine to print 32 characters each time the routine is ca…
... simple text scroller, the idea is to use the ROM printer routine to ... print 32 characters each time the routine ... is called, updating the de string start ... -
Help with 128k greyHello friends, need some help here on try fixing a +2 grey spectrum128. To keep it short, opened the case and the voltage regulator was missing, the …
... it short, opened the case and the voltage regulator was ... first replaced the ztx213 and 650 in the power circuit, ... with a new one, the rom chip also was gone so ... program.) going down the line the PCF also was not ... point I desoldered all the ram chips and after ... -
LOAD "" CODE in machine code/store 128 bank dataHow do you LOAD "" CODE from machine code? I have written the following MC routine that fits into a REM statement in a basic program. I want to cal…
...
I have written the following MC routine that fits ... br /> I want to call the ROM's LOAD "" CODE routine, nothing ... fancy headerless loaders, just the basic function.
call 3503 ; ROM routine - clears screen, opens ... -
Weird symptom number 2...I got a new keyboard membrane for my Spectrum+ plugged it in and low and behold the weird left to right printing of the copyright message disappeared…
... Jetpac ROM... I can play it... with both keyboard and Joystick... the ... />
It could be the ROM. If the Spectrum ROM overheats I guess it ... jetPac it doesn't use the ROM (except for interrupts).
Smokin... more 48k woesHi, it looks like I've converted another Spectrum 48K+ into a smoke machine. I'd been rebuilding an Opus Discovery unit and everything looked good. …
... that the RAM? (smallest socketed) IC on the Opus was inserted the ... darker than normal screen with the characters showing a bright " ... booted with a diagnostic ROM and the memory is all OK ... is the NMI and floating bus. The ROM checksum is also good. The Spectrum ...Using an EPROM in a 48K SpectrumThere are plenty of guides as to how to do this floating around, however I didn't like the fact that you can't then plug in the standard 27128 ROM ch…
... then plug in the standard 27128 ROM chip after the board is modified ... /electronics-articles/how-to-replace-the-rom-of-a-zx-spectrum-with ... .
Next I desoldered the ROM links, and installed pin headers ...MAME-can anybody help?I downloaded MAME and a test rom successfully but I can,t get the rom running. Anybody know why?
I downloaded MAME and a test rom successfully but I can,t get the rom running.
Anybody know why?Pentagon 1024SL 2.2 woesHey there,<br>I'm currently trying to get my Pentagon 1024SL 2.2 up and running for the second time.<br>Right now it's showing me the screen one woul…
... at hand)
- used the ROM from my Pentagon 128 (pulling ... ground since the P1024SL resets to the service ROM bank which ... is empty on the P128 [reaction time of the ... 70ns, the EPROM used for the P1024SL 200ns]). P1024SL ROM works ...Bad Sabre Wulf Speedlock 1 TZX?I've been having trouble getting a Speedlock 1 TZX of Sabre Wulf to load on my 48K and 128K machines.<br><br>It works fine under emulation, but with …
... .
Anyway, the particular TZX I'm using ... 2.TZX", with the following details inside the TZX Archive Info ... Software house/publisher: The Hit Squad - Ultimate play the game
Comment ... Software 1997
The ROM based loader for Sabre Wulf ...Memory testersHi, Just wondering which software people are using to test the memory in their spectrum. I have been using Zorn's memory tester as described here:…
... people are using to test the memory in their spectrum. ... disappeared, but I pulled the file from my personal archive ... snapshot without getting warnings from the emulator. The snapshot does seem to ... 't want to replace the ROM to test the ram).
...Newbie Hardware QuestionsI just recently aquired my first Spectrum, a +2, and I'm in the process of getting acquainted with it. Being a newbie I had some questions, which …
... systems, I often update the ROM's to the latest/last production versions ... generally better off stay with the stock ROM's. From what I ... 've read so far, the Spectrum ... software. I wondered if the +2 accept the 128 ROM image?
I feel they could have done this.After reading the ZX Spectrum ULA, I learned about how the ULA detects if the Z80 if going to access memory in the next cycle and stops it if the ULA…
... , so then the framebuffer can occupy the same address space as ROM. Read ... 0x1FFF and you get the contents of the ROM; write to these addresses ... and you manipulate the display.
The advantage: The ...External Z80 CPUHi Looking for some advice if possible. Many years ago I had a plug-in board for a Spectrum 48k which had a couple of switches, a z80 CPU, and a S…
... off), could force the spectrum to use the external ROM and/or CPU ... can't recall how the Z80 was switched. The ROM seems straightforward, but ... I'm really having problems with the CPU ...Text scroller and custom fontYesterday I was testing this text scroll routine taken from Jonathan Cauldwell's Intro Maker (labels have been inserted to allow partial code relocab…
... but always displays characters in the standard ROM font, while I would ... /> I tried to peruse into the ROM printing routines and copy them ... after the main code with a call ... order to insert the instructions to alter the value of CHARS in ...spectrum 48k issue 3b coloured blocksI have pucked up a nice looking plus but when powered on get black or yellow border and random coloured blocks on screen, I have taken keyboard off a…
... have taken keyboard off and the z80 has been replaced before ... to look, I am getting the cpu taken out and. socket ... cpu fitted if it's the rom does anyone have a spare ... it's messy as for the ram the 8 chips are 4116 ... and if they could be the problem I can replace ...Help pleaseTwo questions... With WoS quick links down is there an easy place to play games online - ideally hooked up to my elite bluetooth via ipad. And …
... can anyone email me the ROM for zaccarria the invaders for my turnarcade ... work machine won't trust the sites!
Many thanks ...+2 Gray ProblemI'm trying to repair a +2 gray that behaves differently at every boot up. Some rare times I can get the selection window but pretty soon the characte…
... rare times I can get the selection window but pretty soon ... go away. I then replaced the rom with a flash eprom containing ... and C000-FFFF.
Also the message "RAM Paging Works Correctly ... " at the bottom.
Any ideas ...Issue 4A, tests complete fine but get odd crashing problemHi all, I've got an issue 4A which has had all of its lower RAM replaced, TR4, TR5 as well as its CPU. It originally had quite high voltages (20-3…
... socketed and nor is the ROM. I guess the ROM could have been fried ... too but wouldn't the diagnostics ROM ... those? Although I'm guessing the ROM test does some kind of ...Laser Squad trickHi all, Here's a small "trick" I discovered when porting Laser Squad's extra levels ("The stardrive" & "Laser platoon") to MSX: - Load level "The…
... Laser Squad's extra levels ("The stardrive" & "Laser ... :
- Load level "The stardrive" (you should use menu ...
Explanation: the "Stardrive" level is hacking the game "core" routine that ... quite buggy by the way (and the original English version ...48k Speccy died, resistors getting too hot to touchHi folks, With 2 days to go till an exhibition my trusty dual-boot 48K issue 3b that I made last year has given up the ghost and I'm not sure I ha…
... really dark screen, the diagnostics portion of the ROM failed at SOMETHING but ... to standard modulator and got the same screen. Checked ULA in ... is good, I can hear the diagnostic beep when it initialises ... 't download any of the docs here, the FTP site gives me ...Saving and loading data in assembly.I want to add a save and load feature to an project I'm working on. Since it's not that much data in size I thought I'd use the ROM functions, but ho…
... I thought I'd use the ROM functions, but how do I ... saving? I've searched the net and the forum but I can ...CAPS-SHIFT KeyCodeIs there a standard Keycode for CAPS-SHIFT Key ? Looking at the ROM documentation in the Main key table KEYTABLE_A, there is no Entry for CAPS_SHI…
...
Looking at the ROM documentation in the Main key table KEYTABLE_A ... /> http://skoolkid.github.io/rom/asm/0205.html
... the keyboard routine K_DECODE
http://skoolkid.github.io/rom ... br /> I also checked the ZX Spectrum manual "BASIC Programming ...Print (to screen) avalue held in a register pairHi guys, looking for a routine that will print any value from 0 to 65535 to the current position on the screen. I once heard that there was a PRIN…
... 0 to 65535 to the current position on the screen.
the ROM, but I can't blimmin ... in theBC register pair, to the current screen position.
Shimmering displayHi all, I've got a 48K issue 4S and it appears to be working apart from it's displaying weird vertical shimmering patterns. It passes a RAM test t…
... be acting weirdly other than the off display. I grabbed a ...
I've swapped out the ULA with no change and ... something happening to the display after it leaves the ULA now after ... the Spectrum is doing, the counter before the ROM kicks in on the video is the ...SeBASIC Updated to version 3.2 by aowen...SeBASIC has just received an update!... Version 3.2 is now available, but it'll cost ya!... Its only $5 USD, and can be downloaded from here:…
... bytes for the fix).
* Moved the UDGs next to the palette ... 128k
3) The 3.2 rom on the other hand, is ... Given all the hard work that has gone into this ROM, I ... in the download upon purchase is the ROM, the manual, the source assembly for the rom ...HILOW Interfaces informationHi recently i came across the HiLow tape interfaces, this units where build and sold on Uruguay by the same team that developed games like NarcoPoli…
... Carlos Galucci the developer of the OS contained in its rom, he ... and parts here, after the failure off the Adam.
... " the modified standard coleco adam modems and produced a rom os ... Armas he dumped an dissasembled the rom from the hilow a long time ...Tape Loaders and Tape MasteringHi guys, A couple of questions. As I'm getting towards the later stages of developing a game that's eventually going to get a physical release, I …
... some example source, other than the ROM disassembly, of a fast ... conversion instead.
The other thing I'm wondering ... such benefit in doing the same with the Spectrum since it ... of technology facing obsolescence, the modern equipment may not be ...
