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48k Stops loading and resetsI've just fixed the problem I had with my Issue 2 Spectrum only showing 16k memory by replacing all of the upper ram. With that job done I've done a …
you could write a basic program to peek and poke all the addresses and see what happens? it wouldn't actually fix anything of course :) -
Chuckie Ess 2 tap doesnt work[url]http://www.worldofspectrum.org/infoseekid.cgi?id=0000959[/url] It loads, you press a key and it returns to Basic! Anyone any idea why or got a …
... of RAM, so the Microdrive commands that are in BASIC ... saved, not from the BASIC loader in the TAP ... was actually in the BASIC loader but the TAP ... VAL "65520": POKE VAL "23624",VAL "0": POKE VAL "23693", ... non-drowsy"(!?) decongestant to test it much more but there ... -
48K Ram Check Command not workingI am trying to repair my Spectrum 48k. It is having issues loading games, sometimes they load all the way to launch and then the speccy resets. Oth…
... replaced all of the lower ram chips and now the Spectrum ... me 32775
Which ram chip is this pointing to ... :smile:
This test cannot tell you which RAM chip is faulty ... /> PRINT PEEK 32776
POKE 32776,255
PRINT PEEK 32776
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…
... 128 basic:
10 clear 49151
20 poke 23388 ... 23388 = BANK_M variable. used like poke 23388, 16+bank nr.
BASIC ROM) + 6 (RAM 6) = 22.
- As explained before, the POKE ... the BASIC program and system vars. RAM 7 is used by the BASIC editor ...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…
...
I have seen upper RAM chips fool the ULA into ... only testing for certain keys. BASIC, however, would appear frozen.< ... the location of the dead RAM chip (i.e. if ... RAM chip.
Can you burn an EPROM with my test ... EPROM with the correct program on.Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... see.[/QUOTE]
Your program is incorrect. It's supposed ... /> [CODE]1 LET z=0: POKE 23560,0: LET z=z ...48K Not booting properlyBought another faulty spectrum from Ebay. This one, when you turn it on, it looks like it's going to boot OK, but when it gets to the point where it…
... /> I entered the command 'PRINT PEEK 23732 + PEEK 23733 * 256' and I ... tried to load the memory test program from Zorns website but I ... symptoms strongly suggest an upper RAM fault. If you had forced ... occured, most probably an upper RAM IC is interfering with the ...Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
... animated in
// this first test program.
/////////////////////////////////////////////////////////////
// ... = 1 // not returning to basic
#pragma output CRT_ENABLE_CLOSE = ... to be run from ram without any initialization ...New version (v0.31) of ZX DiagnosticsHi all,<br><br>Just wanted to let people know that I've released a new version of the Spectrum Diagnostics into the wild.<br><br>These were originall…
... you need is a suitable program in the flash ROM on ... 'm sure doing a very basic parallel to serial transfer (no ... machine that has no working RAM at all, due to its ... improvisations needed.
An alternative (test) ROM, can be loaded by ...IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... though.
The PEEK and POKE BASIC statements manipulate memory using the ... . The IN and OUT BASIC statements differ in that they ... about here is generally either RAM or ROM. If you attempt ... what you just put in (RAM).
Not so ...Spectrom interface ?Hi all, I got 2 of this devices ... :) [img]http://forest.no-ip.org/wos/spectrom/20151006_151428.jpg[/img] [img]http://forest.no-ip.org/wos/sp…
... bootstrapping program in that bank will be copied to lower RAM.
RAM from ROM. When the second ... will need to be the BASIC ROM as MM uses the ... device myself in order to test this theory, unfortunately.
I recapped my 128K toastrack, installed stereo kit and detached audio from video, but...Hello fellow forumers! I'm seeking for help: I've finally decided to change all electrolytic capacitors of my 6U (with all Panasonics 105oC)... Af…
... same with Ben's little BASIC test program...
Oh, I also checked ... with Paul's Farrow 128 RAM Tester, ROM tester and it ...Utility to create long REM Line for storing M/C program - Maximum BASIC Line LengthHi, I think there was a Utlity or Toolkit to create a long REM-Line under 48k BASIC to store some MCode in it. So I don´t have to type e.g. 5…
... way to do it in BASIC (tested on +2A).
PEEK 23670: POKE VARS+3,PEEK 23671:
POKE rv,234: POKE rv+1,CODE "": POKE ... line in the program.
The two "POKE ... CODE ..." statements are ...Was there a POKE that broke the SpectrumHi Everyone I've been recalling myths and rumours from back in the day. You know "Lunar Jetmans" trailer and that sort of thing. But one rumour …
... will only find ROM and RAM. POKE in BASIC simply writes the specified ... into any RAM location may cause the the BASIC ROM program to crash ... . And in fact, the BASIC program in the ROM actually does ... Spectrum, there is no killer POKE.
On some ...Help With AY Music Program in BASICHi, last year I started writing a BASIC program for making and recording AY Music. I thought it would be easier than learning how to use Soundtracker…
...
[code]POKE 23672,0 : POKE 23673,0: POKE 23674,0[/code ... br /> [code](65535*PEEK 23674) + (256* PEEK 23673) + PEEK 23672 [/code]
... and test that instead, especially important in Sinclair BASIC where ... "s"+7 : READ y : POKE x,y : NEXT x[/code ...Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... pick the letter "L", the program resets. [URL="http://www.alessandrogrussu ... Nonsense in BASIC" error due to 128/+2 RAM disk commands implemented ... "]According to Nuggetreggae,[/URL] a POKE 24090,8 entered while running ...Pietro Bros [DEMO]Hi People. I wanna share with you a game that I'm working on, since a month or so... [img]http://i.imgur.com/kOoPGzU.png[/img] [url="https:…
... first byte of uncontended ram. You have to tell ... VAL "32768"
30 POKE 23739,111
40 ... VAL "28000"
30 POKE 23739,111
40 ... you want because your basic loader still has to ... program has started, you can reclaim the area occupied by basic ...New K-MOUSE 2016-LPI plan make new PCB version of K-MOUSE 2016. This version will oneboard, horisontal, without cinch connector. "LP" at end sign LOW PRICE. Price of ho…
... .JPG[/img]
Test with DIVMMC, all work correct ... ]
And now test with DIVMMC + next K-MOUSE ... speed regulator slowdown only program running in zx ram. All programs/code ... as LOAD,SAVE,keyboard test stability,BASIC is always full usable.Question - SAMS Timex Sinclair 2068 Beginner/Intermediate GuideHi all, I just acquired a T/S 2068 and the a book that came with it is, SAMS Timex Sinclair 2068 Beginner/Intermediate Guide. On page 18 of thi…
...
As for compatibility, all Basic programs will work with few ... because there is less RAM available for Basic in the ts2068 so ... at risk are programs that poke directly into the channels ... accessing the screen so the program can synchronize with the ...Akalabeth gamei found now that someone ported an ansi-basic game (coded in 1979?) to msx-basic - what about a zx-spectrum basic version of it? ;) https://plus.goo…
... br /> Reference:
AppleSoft-II BASIC Programming Reference Manual (©1978 Apple ... Inc)
Apple-II BASIC Programming Manual (©1978 Apple ... PEEK a+256*PEEK (a+k1)
PEEK a 16-bit integer from RAM ... [code]
8001 POKE da,rlo: POKE da+k1,rhi
Speeding up programs by hacking the SysVarsPositively pleased to properly discover this area of the forum! I have a couple of recent tricks that might be of interest - they're probably old hat…
... setting PROG to NXTLIN. The test program simply fills the screen with ...
60 REM POKE 23635,PEEK 23637: POKE 23636,PEEK 23638
70 FOR ... REM
60 POKE 23635,PEEK 23637: POKE 23636,PEEK 23638
70 FOR ...Must be missing the point - machine code... Hi Folks, Trying my hand at machine code again but falling at the first hurdle. I hand crafted the following to run at address 62000 and the co…
... /> 62008 Loop: LD (HL),A ; POKE bit pattern in to screen ... /> The following BASIC code loads the program in to RAM and executes it ... ;TAB 22;D
270 POKE A,D
280 LET ...Where does the BASIC program sit 48K Spectrum memory?Hi there First post so be gentle, I've had a spectrum since the 80's and have recently started programming it for fun again. I wrote the followin…
... back down to 16384 using POKE again. But as predicted ... of data which you can POKE into memory, then call ... example of how to POKE the machine code I' ... BC=6912
1030 POKE DE,PEEK HL:
LET HL ... in BASIC (use [b]GOSUB 1000[/b] in your program), you ...Help with Snake type game...any ideas ?Hi all I've attached me trying to write a snake type game. My first concern is me not writing over the System variables area. I'm pretty happy what i…
... br />
You only test for the start and end ... edges as-is. Your test doesn't take into consideration ... That's not easy in BASIC, and I'd be ... s my version of your program with limits built-in. ... p" AND addrle):
POKE oa,16:
GO TO ...How to get more than 21 UDG's in BASIC?So with graphics mode under the G cursor how many UDG's can you do from BASIC is it 21? It's all POKE 65368 and above and it's sequential ABCD.... an…
... can be loaded into RAM and the CHARS variable ... 768 bytes), into somewhere in RAM. Make sure you do ... 65279. But remember to POKE the system variable CHARS ... you type, and your BASIC listing, will now appear ... names so that your BASIC program is still readable!Spectrum 48+ 4S - Upper RAM issue, and now a self-created problem!I recently picked up a known-flaky spectrum off eBay, to have a bit of fun fixing it and reliving youth. It was labelled as 'keyboard duff, shows…
... /> Balford's tape-based test shows all upper RAM to be faulty ... poke and peek 0,255,85 and 170 into seemingly any upper RAM ... used to access the upper RAM? Or something else that is ...ZX GameDev tools consolidatedHello WoS! It's been a while, yet with a plenty of decent gamedev tools (including new ones!), is there a [i]single/pivot table[/i] or some datash…
... way and then quickly test if these changes make ... is much improved), boriel basic, etc that allow you ... enter and experiment with program logic in a higher ... rather than having to program the whole thing from ... file :P Keeping all ram variables in one place is ...Comp.Sys.Sinclair Crap Games Competition 2017As the creator of the second-least crap game in last year's competition (and the only mug stupid enough to agree to host it this year) I am proud/ash…
... />
This is the 'Sinclair BASIC Attribute Scroll Mechanism', or [b ... /> If you want to POKE or PEEK data directly to the buffered ... ATTR() read, the address to POKE or PEEK is [b]( 63232 + (y ... UDG data. Then in your program, POKE the high half of the ...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…
... ) to ROM1 (128k syntax checker). RAM banks stay at 5/2 ... editor, menu system and self-test program
ROM 1: 128k syntax ... : +3DOS
ROM 3: 48 BASIC
Bit 3: Disk motor ...
