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Any BBC aware Specchums out there?After the UK101 and VIC20 emulators I've moved my sights onto emulating a BBC computer. This emulator will be different though in that it will be a Z…
... run the real BASIC 4 ROM, but the operating system calls ... and run any Language paged ROM though. I have tested it ... graphics support - the BBC draws lines and fills shapes via VDU ... of not drawing the first/last pixel.[/LIST]
I ... -
Be honest - Vienna, by Ultravox, is a really awful songActually, Vienna is a great song. But yesterday on BBC3 they had one of those "100 best" or "100 worst" worst programs that today's program schedular…
... on screen name and profession lines define them, are as unfunny ... the "worst of" programs, like last night's, these talentless, self ... complicated like BASIC programs that print their name on the screen ... -
alternate BASIC ROMI've come up with a few patches to the standard ROM to make it use the 128 shadow screen by default. The ROM is reorganised as follows: RAMTOP is se…
... few patches to the standard ROM to make it use the ... shadow screen by default. The ROM is reorganised as follows:
the print buffer is moved to 0xdb00 ... -
err, I like wrote this years ago, and just found it archived.[b]read it, and say it's crap if you want, but do not go on about the technical side, cos it was bullshit, we all know it, and the end makes no sense…
... surveillance network. For the last thirty years it had been ... /> SEN5241:k
Lonewolf: 10 PRINT ''boolean recall''
15 FOR ... than video games. The last letter from the licensing authority ... together and connected to phone lines, ham radios still tapped ... -
25 years with the SpectrumTo paraphrase JFK, ask not what your Spectrum can do for you, but what you can do for your Spectrum. Well I've done quite a bit since I joined the sc…
... hopefully I've rectified the last three.
* Advanced IF2 Simulator [ROM] (2001)
* BMP2SCR ( ... Riptoff 2 (2000)
* SK Print (2000)
* Suggested Advanced ... in the Gosh Wonderful ROM
* Discovering ... -
winston's diagnostics boardHi Winston, I've recently built your diagnostics board on project board and am having huge problems getting it running. I've been pulling my hair ou…
... pulling my hair out the last couple of days to be ... not boot to the internal rom. It will boot to the ... (gives me blue/white vertical lines, as it should) but with ... -
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…
... is it possible that the ROM is malfunctioning specifically while executing ... />
I changed the ROM chips (mask ROM's manufactured by AMI ... two EPROM's with the last version of +3E project. The ... 0312h at ROM 3): original ROM has 05h here. My ROM has 01h ... -
Midi Out from machine codeI need to send midi-signals by machine code, while Basic is too slow for my current project. I already read I can use hookcode #11E, but I have some …
... should select the correct rom first, before calling ...
Bit 4: ROM select. ROM 0 is the 128k editor ... write-only, and its last value should be saved ... checker
ROM 2: +3DOS
ROM 3: 48 ... symbolic and the exact lines of code will be ... -
ISO ROM 128 with TR-DOS 5.05(cz)This is new correct version of ISO ROM for ZX + BETADISK. Some extra basic command is designed specially for use in conmination with TR-DOS 5.05(cz).…
... new correct version of ISO ROM for ZX + BETADISK. Some ... debugger "Devastace" from tr-dos rom)
! (start DOS and ... br /> "hallo" (print text "hallo" on screen - PRINT command is ignored ... trdos.
ISO ROM after reset no erase memory ... -
48K Speccy Repair Log.Some people may know my love for writing up my repairs of arcade PCBs on various forums so thought I would do the same for this little fella. Had th…
... the base spent the last 3 years at least ... another speccy), a working ROM, working lower RAM and ... an original Sinclair test ROM cart for the Interface ... test that all the address lines, RAS and CAS were ... hooking up the Sinclair ROM cart and running the RAM ... -
DRAW x,y,a Algorithm - how does the ROM do it?Hi all, Getting on with SpecOS, and one of the things I would love to do is to preserve the original ROM's behaviour when drawing Arcs. This is don…
... is to preserve the original ROM's behaviour when drawing Arcs ... the alogorithm starts at the last point plotted, moves through a ... 've been reading the Complete ROM disassembly, where they provide an ... drawing algorithm implemented by the ROM. Just be clear, I ... -
Spectrum lost upper memoryHi again, I have a Rubber key Spectrum(issue 4S) which lost it's whole upper memory. It's worked okay, but i forgot it on over last night. My son wa…
... i forgot it on over last night. My son wanted play ... memory problems. So i wrote PRINT PEEK 23732+256*PEEK 23733 ... have 16K Spectrum which RAM/ROM is in working order. I ... have 48K Spectrum with RAM/ROM OK.
Now i loaded ... -
PFN PRINT by Garry Rowland...Hi Folks, Whilst watching Casualty last night I thought I would surf the archive and look at some "classic" software. One I tried was a program cal…
... ,
Whilst watching Casualty last night I thought I would ... generated by something called PFN PRINT by Garry Rowland and were ... find a copy of PFN PRINT or the instructions on how ... get a copy of PFN PRINT with instructions? It looks like ... -
How do I make a ROM selector switch ?I would like to have a ROM switch for my good old Alesis HR-16 drum machine, so I can switch between 2 sets of ROMs to get different sets of sounds. …
... would like to have a ROM switch for my good old ... enable) lines to a toggle switch to select between the ROM sets ... -
Print text in assemblyHello, a perhaps simple question: I would like to print a text string on the screen and I wonder how to do that in the most easy way? I seem to re…
... question: I would like to print a text string on the ... kind of ROM based code, RST 16 (?), but can that print more ... . "Hello world of spectrum" and print at a position of choise ... looking for the equalient of PRINT AT 5,10;"Hello", but ... -
Shadow ROM partial decoding not implemented in emulatorsOr at least, not implemented in Spectaculator, and it seems that not in Fuse too. [URL="http://www.speccy.org/foro/viewtopic.php?f=8&t=408&start=53"…
... shadow ROM resides, show that the last 8192 bytes of the ROM dumped ... remains in the last 8192 bytes of the ROM space?
ROM and therefore, the last 8192 bytes of ... the ROM space are a ... -
Speeding up select processing...Hi Folks, I have the following code in my program and it works fine but is rather "sluggish". I have even moved it to the beginning of the program …
... POKE attrp,VAL "112":
PRINT AT t(1),0,,,,:
lines if you press cursor up ... .e. 10 rows of 2 lines each.
[*]one=a variable ... ]- reads the code of the last key pressed and branches to ... on row 1 or the last row then go to line ... -
Tile based graphics and scrolling thingy...Here's my best attempt so far at a tile based rendering and scrolling routine. It draws in 22 8*8 graphics tiles along the top of the screen (junk i…
... scrolls the screen down 8 lines then repeats the process with ... )
ld (hl),a ; ... draw last byte here
ld (position_var),hl ; Reset print position
ret
saving part of a BASIC programHere's a short routine to save part of a BASIC program. The idea is that it can be merged into a program and then used to save sub-routines, etc. to …
... line >= start to the last line ="A"):
DEF FN ... >a2):
INPUT "SAVE lines ";(la);" to ";(lz);" as:"'h ... $(2 TO 11)=" " THEN
PRINT #0;"F Invalid file name ... +CHR$ 128+l$
9994 PRINT #0; FLASH 1;"m/c ...Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... of the board that this last one is a
... tested the CPU nor the ROM because I don't want ... have to and while the ROM is socketed, I
... the data bus lines between the CPU and ROM
and ULA ... waves on all data bus lines at the CPU.
< ...New Flash Rom Board for +3 and Black +2As per the other thread I've now sold out of these boards. There is however the possibility of getting a new batch made, and at the same time making …
... expansion device with a flash rom reprogrammed itself. This led to ... twiddling a few address/data lines around and I'm rather ...The short blocks loaded in Jet Pac(Hope this have not been previously discussed. If so, my apologies) Is there any reason why Jet Pac loads three short blocks after the main block? I…
... one single LOAD ""CODE 24572 : PRINT USR 25067, the game starts ... assembling the NMI code in ROM and in fact, they patched ... Ultimate? (1)
The last block writes two values at ... ""CODE 245772: POKE 23728,233: PRINT USR 25067
Alternatively ...Repaired some 128K's todayI have lot's of ZX Spectrums laying aside with some more complex defects. Today I decided to try to fix some of them. I thought: why not share my ex…
... /> One has a problem with rom-selection, and mostly ends up ... changing lines on screen.
I started with the last one ... started cutting the 5V cupper lines to the ram chips.
Undefine functionHere's a routine to selectively remove variables from the VARS area and reclaim the space. This can be done partially from BASIC already by assigning…
... FOR z=first TO last: PRINT USR undefine,z$(z);: ... /> RECLAIM2: equ $19e8 ;ROM routine RECLAIM_2
SCANNING: ... equ $24fb ;ROM routine SCANNING
LOOKVARS ... : equ $28b2 ;ROM routine LOOK_VARS
FETCHS ...Using the ROMs PRINT routineI really am starting from scratch again it seems, but how do you utilize the ROM routine to print characters, I think you point te BC register to an …
... do you utilize the ROM routine to print characters, I think you ...Faulty rubber speccy - advice neededHello all speccy hardware gurus :) Recently I moved to a new flat and after a long time have some space (and time) to dig out my old Speccy hardware…
... the other was fully functional last time I powered them up ... black paper with thin white lines...
After looking through ... - black paper with thin vertical lines.
Since the ULAs ... further, the CPU and the ROM chips are not socketed so ...This &*%@ is really putting me off of eBay!!!Having serious issues getting a seller to send me an item. Have been extremelly patient, waiting two weeks and trying to arrange her postage for her…
... i needed to do was print it, not spend hours ... istall several programs just to print a postage label. this has ... you need to do is print the label, attach it ... telling a few porkies! Her last reply:
[ ... idea, or something along them lines) and I wasn't ...The Sinclair ZX Microdrive Resurrection Project (long)Dear Spectrum fans! [Management summary: Download [url]http://www.bartheld.net/temp/mdv2img.zip[/url] and tell me what you think. All help very much…
... turned out, "old data" from last century wasn't in a ... , Gianluca Carri's "Spectrum Shadow ROM Disassembly" and a few other ... as a few BASIC DATA lines together with some configuration GUI ... that is in there. The last step was to write a ...Difficult to find upper RAM fault.I've recently repaired an issue 3B 48K Spectrum that had a tricky to diagnose upper RAM fault, so I thought I'd post a report of what I found here. …
... relevant section of the ROM program is disassembled below ... ://drizzle.zigg.net/ZX/ROM-Memory_test.jpg[/IMG]
lines.
Next ... the left is the last byte of lower RAM ... next instructions retrieved from ROM) and 32767 was ...
