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About divIDE firmwaresI was testing a original divIDE, and I've found that it seems that firmware development is non existant. - FATware doesn't support TZX, and doesn't …
... and I want to lower the barrier to other ... />
[quote]A basic tzx support would be possible ... standard loading techniques, some basic turbos, support the same ... Phil are overstating the case a bit when they ... the [i]general[/i] case, but there are plenty ... -
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…
... and copy it into the upper RAM bank, and go ... back to dos (repeat until upper bank is 'full' / my ... any dos routines from the upper bank (as ram page 7 ... [b]need[/b] to keep basic active, just as long as ... them...), so could i clear lower and reclaim some space in ... -
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…
... any dos routines from the upper bank (as ram page 7 ... [b]need[/b] to keep basic active, just as long as ... them...), so could i clear lower and reclaim some space in ... -
New BUZZSAW+ Demo, No.2OK everybody, here's the latest demo of [I]Buzzsaw[/I]. This includes the title screen I wrote in Corfu with control selection, some new sprites and…
... , as you say, numbers, upper case and basic punctuation. There are then some ... -
New BUZZSAW+ Demo, No.2OK everybody, here's the latest demo of [I]Buzzsaw[/I]. This includes the title screen I wrote in Corfu with control selection, some new sprites and…
... the 1.5K of the BASIC area that's present on ... ' code is running during the upper and lower border, at which point ... -
Advanced Soccer SimulatorAdapted game Advanced Soccer Simulator for disk system +3DOS. Adaptation full, it is made even load/save the postponed condition of game. [URL="http…
... br />
1. Naturally basic – preservation and loading of a ... added. Earlier in the basic menu it was possible to ... mixed up with the basic code of game, therefore ... it was possible to lower considerably volume of a ... , as well as in case of ELITE, I have ... -
Framerate of Spectrum gamesI was reading a bit about framerates in modern games and it got me wondering about the Speccy. First off I'd hoped to find what framerate my old gam…
... spectrum this is not the case.[/quote]
It only ... but more time in the upper and lower borders and [b]Co ... -
The Chuntey InitiativeIt's the start of a new year and with it brings a new wave of optimism and hope! :) In light of the relative success of twitter/speccynews (in the s…
Arjun, the upper$ and lower$ functions only return the first letter of the string capitalized. Something like this will do the whole word:
DEF FN u$(s$)=VAL$ "CHR$ ((CODE s$)-(32 AND CODE s$>96 AND CODE s$ -
The Chuntey InitiativeIt's the start of a new year and with it brings a new wave of optimism and hope! :) In light of the relative success of twitter/speccynews (in the s…
... =Alcoholics Anonymous;413621]Arjun, the upper$ and lower$ functions only return the ... -
16 K Sinclair Spectrums Still Available?Hi. I wanted to know if the 16 K Sinclair Spectrums are still available to buy. I have looked around on the net without any success. Maybe someone kn…
the lower ram 16k should not be ... function, you mean remove the upper 32k by the beeper tbh ... of which most are seriously basic -
Looking for some 48k RAM (upper 32k bank)Greetings, I was wondering where I could find some upper RAM for a 48k (issue 4A). It's the Texas Instruments TMS4532-20NL4 P8419 (or any compatib…
... =1]
[*]Remove any existing upper 32K RAM chips (=pull 4164 ... between board & lower part of the case. I tried to scrape ... some material from the case - not enough. Finally I cut ... problem into a Dk'tronics case, btw. -
damaged spectrum+ (blinking squares)Hi, Sorry for my poor english, but I couldn't find on family forums any remedy for my hardware problem with my first speccy in my life :) I've bought…
... , which doesn't seem the case? Not sure what to make ... ... I'd be doubting between lower RAM chip(s), Z80, or ... Spectrum I'd just unsolder lower RAM IC's + Z80 now ... you... (btw. too bad the upper 32K isn't socketed, so ... -
BITWISE operators...Hi Folks, Another question - is there a way (fast) to do bitwise operations in Sinclair BASIC? Many thanks Paddy
... degree e.g. BBC BASIC, Amstrad BASIC so it could be ... of Sinclair BASIC and many of them use a lower level of ... floating point precision (Sinclair BASIC uses 40 ... /> The SE Basic ROM, BetaBasic, HiSoft BASIC, YS MegaBASIC, BBC BASIC (Z80).
How do you work with fonts on speccy?just curious really.. I know c64 workings, and obv. the spec you draw direct to screen.. on 64 , you'd make what would be equivalent to UDG.. and sa…
... he means $40 hex, the upper half of each double height ... lower half in the second 64 so it was just a case ...Another machine code problem, sorry[CODE] OPCODE HEX ADD LD A,00 3E00 F000 PUSH AF F5 F002 LD B,05 0605 F003 LD C,06 0E06 LOOP F005 POP AF F1 ADD A,C 80 DEC B 05 …
... . I did that bit in basic and it worked. The next ... lower screen (bottom lines).
PRINT USR will output to the upper ... /> If you want to call upper screen without extra MC-code ... on screen when returning to BASIC use
[B]PRINT "" AND ...Help with broken SpectrumHi There, Just received a ZX Spectrum computer. It's an issue 3B (48k version). When I power it up (9V centre pin -V) nothing happens. It's complete…
... that is on the lower RAM chips (lower left corner of board ... (upper right corner pin) = GND = same electrical point as modulator case. ...
Pin 1 (upper left) = -5V
Pin 8 (lower left) = +12V ... good idea to remove the upper 32K (RAM chips in middle ...SAM programmingHi Can anyone provide any example hello world or graphics/sprite printing style machine code routines for the SAM? I can't seem to find anything rem…
... play with paging in the upper 32K without too much juggling ... 'll need to use the lower 32K, which means disabling the ... to allow a return to BASIC on exit. More details if ...General purpose full screen input routineHi Folks, One of the things that annoyed me back in the 1980s with most BASICs was the lack of a full screen "formatted" input function. You could …
... SUB 9130: REM Mixed Case,Optional
180 LET ... GO SUB 9130: REM Upper Case,Optional
190 LET ... SUB 9130: REM Mixed Case,Required
220 LET ... GO SUB 9130: REM Upper Case,Required
230 LET ... (3)
9045 REM Upper Case(4)
9050 REM ...Whole upper memory lostHi! I own a rubber key Spectrum with 48K RAM. Suddenly it lost it's whole upper memory. All diagnostic programs says that it's 16K model with workin…
... small program (in BASIC?) that goes over all upper 32K memory locations ... chip a few times in case it's a loose contact ...Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... out of I suspect just basic ignorance wrote their own collection ... more. (C code in any case compiles to something pretty tight ... improving the look of the case...?
[/quote]
... die is larger you get lower production yields.
And ...Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
Actaually the case would be the stumbling block ... />
The things with lower non recurring engineering costs are ... Especially when the original plastic case carcases are pretty readily available ... RAMs (one for lower and one for upper memory), instead of ...Coding Integral Calculus EquationsDoes anyone have experience of writing routines to evaluate integral (or differential) calculus equations on the Spectrum? I've been trying to find s…
... a formula!
In case you need a brief summary ... the lower "limit" from the integration sign up to the upper limit ...Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... (not keys, and rubber key case is small enough IMO), not ... /UHF these days).
[*] Replace lower 16K RAM with an SRAM ... is a PITA).
[*] Replace upper 32K RAM with another SRAM ... to find seller, possibly at lower overall cost & then enjoy ...ZX Spectrum Woes...In my endeavours to get my second Spectrum (Issue 3) working I have replaced the CPU, memory and lower ram. I have fitted sockets for the CPU and me…
... 'd be leaning towards lower memory in your case, even though it ... getting past the lower memory, if it was upper memory you would ...New platform game: Sid SpannersHi all, here is my Christmas present. A new platform game (well, more of a mini-game really). [url=http://java.cms.livjm.ac.uk/homepage/staff/cmspc…
... I can't overwrite the BASIC loader with C code or ... overwrite the system variables and BASIC loader without any problem. As ... fast as having them in upper memory, but if memory is ... of that "awkward" part of lower memory from a C program ...Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…
... , there seems to be the case. This is because of faults ... /> My second challenge is to lower consumption for LCD, rubber 48K ... and do Sami's fix Upper 32K SRAM D43256BCZ-70LL SRAM ...Legend of Kyrandia - ZX Spectrum DemoI was browsing the ZX Open Source site [url]http://opensourcezx.untergrund.net/[/url] and I found an interesting tr-dos disk image of a playable demo…
... />
Yes, that's the basic idea, but no, this is ... the fence, his priority is lower than the fence's INK ... 1 byte each. In this case, an alternative simplification is to ...writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... the whole point: because upper byte doesn't matter ... when reading keyboard, the upper half of port address ... * addresses with the lower bit reset). You certainly ... ]
*Any* lower bit reset port addresses will ... case of the ULA it only expects the lower ...Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
... be specified
[*]Supports mixed case, upper case only, integer (+/-) & numeric (+/- ... stretching the performance of Sinclair BASIC. :smile:
...
670 REM (2)Upper
680 REM (3 ... REM
820 REM Mixed/Upper
830 REM
