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Common pitfalls and solutionsLet's discuss some of the common problems in Speccy programming, and the methods we use to avoid them. For an example, here is a piece of code that …
... in 128 mode is that bank 7 is used to store ... to have one that would switch older 48k releases on the ... the end to do the switch. I realised it had done ... -
Memory mapping: Pentagon compatibility?I'm writing something that will rely heavily on the Spectrum's ability to switch screen buffers in hardware (port 0x7FFD). The original Spectrum 128K…
... in RAM 0, and then switch to RAM 7 to draw ... your screen writing routines in bank 2. Page the screen you ... 0xc000. Store the data in bank 5 at 0x4000. When ... put the interrupt routine in bank 2 as well. That gives ... data (after the screen in bank 5). You could use ... -
Flash based rom replacement board for +2A/+3I'm sure I already started a thread about this, but I can't find it... Anyway, this post's to say that I've just sent off the order for the printed …
... testing new versions of the +3e ROMs for each hard disk ... /> Also modify +3 rom or +3e rom for better compatibiity with ... . Via port 1FFD will possible switch between ZX128 rom and 48rom ... -
SpecOS progressOk, As you can all see, I'm back - and I've been working away on SpecOS for a while now. There's a few videos, which you can see on my blog: [url]h…
... font is actually a memory bank. I've not added support ... commands (Text At Graphics) which switch text ouput to using the ... -
Flash based rom replacement board for +2A/+3I'm sure I already started a thread about this, but I can't find it... Anyway, this post's to say that I've just sent off the order for the printed …
... board (doddle) and soldered a switch
now I've ... /> so I'm assuming that bank 2 needs the 48k rom ... and bank 3 the 128k? or is ... -
Flash based rom replacement board for +2A/+3I'm sure I already started a thread about this, but I can't find it... Anyway, this post's to say that I've just sent off the order for the printed …
... board (doddle) and soldered a switch
now I've ... /> so I'm assuming that bank 2 needs the 48k rom ... and bank 3 the 128k? or is ... tap files (one for each bank) you can load them all ... -
Flash based rom replacement board for +2A/+3I'm sure I already started a thread about this, but I can't find it... Anyway, this post's to say that I've just sent off the order for the printed …
... add a write protect switch alongside the bank selection. If anyone who ... -
SpecBAS (SpecOS's BASIC interpreter) is updated - build 236Build 236 is up at [url]ftp://zxdunny.dyndns.org[/url] New for this release is the beginnings of a proper manual - all commands and functions docume…
... into a bank, how then can I switch to that bank to run ... about a command like SWAP BANK sourceID, destinationID...
PPS: How ... 0 as the current running bank as default?...
... PPPS: I like the bank concept, its intuitive and simple ... -
SpecBAS (SpecOS's BASIC interpreter) is updated - build 236Build 236 is up at [url]ftp://zxdunny.dyndns.org[/url] New for this release is the beginnings of a proper manual - all commands and functions docume…
... into a bank, how then can I switch to that bank to run ... />
LOAD filename$ BANK n
RUN [BANK n] filename$ [ASYNC]
bank. Multiple programs in one bank must have unique ... br /> PPPS: I like the bank concept, its intuitive and simple ... -
I am currently playing......Don't know if there's been a thread like this, but I can't find one.... Having seen all the different threads asking people if they've played such a…
... I've got at the bank. I won't get as ... save your game at the bank just over the road, from ... you need to you can switch from the bloody big cannon ... profile, and go from the bank back you your storehouse with ... -
Alien8 will not run on Divide?I can't seem to get Alien8 running on my 128+ with Divide. I have the original tape and have loaded into an emulator to create a snapshot, (.z80) an…
... /> So What does that disable bank switching do that lets the ... ) games use code which will switch the banks by accident. This ... 48K BASIC as this disable bank switching, but DivIDE uses USR0 ... like 48K BASIC, but enables bank switching. -
Spectrum +3 and DivIDE+I have won a +3 on ebay. When it arrives, I know that I can use my DivIDE+ with it, but I have read about the +3E ROMs. I mostly use Spectrums to pla…
... such as that. Are the +3E Roms of any real use ... /> Is there another way to switch to 48K, ie does SPECTRUM ... -
What Spectrum to choose?Hi i'm new to the Spectrum. I read 'bout it in CDA (Polish game magazine) and watched LGR review of the 48k and it REALLY interested me. What model m…
... paging port and switch to the second screen bank. If you lock ... -
What Spectrum to choose?Hi i'm new to the Spectrum. I read 'bout it in CDA (Polish game magazine) and watched LGR review of the 48k and it REALLY interested me. What model m…
... paging port and switch to the second screen bank. If you lock ... -
Am27c2001Hi, maybe someone can help me. I own a IF2 Cartd. from Paul Farrow. It works well until 128kb.EPROM but I have some IC's with 256kb and I want to us…
... , my guess would be a switch on highest address bit..
bank on my flash board (which ... -
ZXC3 Rom CartridgeI recently aquired a ZXC3 Cartridge Rom from [URL="http://www.fruitcake.plus.com/"]Paul Farrow[/URL] fully populated with the latest diagnostic softw…
... and I would need a switch to use twice a128kb Rom ... 2 Toggle switch to select the correct 128kbytes bank.But as I ... -
Supertest 128 - Loader QuestionI wonder if someone could explain (in simple terms please) :) , the purpose of the switch code. I see what is doing (going to 48k mode via spectrum)…
... bank 7 at 7:F600: 0x0A00 bytes
; E. Stop motor, switch ... /> ;
; E. Stop the motor, switch out +3DOS.
;
ld ... /> ;; ld sp,(OLDSP)
;
; Switch to 48k mode
;
di
ld (BANKM),a ;Switch to the second screen.
Anyone here have the UIEC for the C64....and if so what do you think about it? Guy selling them on Ebay for $55 and I'm tempted to get one, a brief look seems to suggest there is lots of…
The on/off switch thing was to select a bank of the ROM. Its usually done in an EPROM (you probably knew that), So one position was to select Normal ROM and the other was to select Jiffy ROM or whatever.Platformer BAS file?Does anyone have an example of a platformer in BASIC? Specifically one that uses drawn sprites, etc.
... bank of 21 graphics at any one time, but you can switch ... then you'll need to switch it back again if you ...Platformer BAS file?Does anyone have an example of a platformer in BASIC? Specifically one that uses drawn sprites, etc.
... bank of 21 graphics at any one time, but you can switch ... then you'll need to switch it back again if you ...Was the +3 a missed opportunity?I just wanted to gauge WOS opinion on this. Do people think that the +3 was a bit of disappointment that didn't really advance the hardware as much a…
... +3e roms, although it is controlled by a switch so i can switch ...+2A/+3 compatibility fixes thread!It might be a good idea to keep these fairly common +2A/+3 compatibility fixes (and requests) in a single thread for quick reference ;) Let's start …
... ;
ld a, $14 ; 5b0b 3e 14 $07ts
ld bc ... /> ld a, $30 ; 5b12 3e 30 $07ts
ld bc ... ld a, $30 ; f399 3e 30 $07ts
ld bc ... (normal display file in bank 5), 1=SCREEN 1 ... (shadow display file in bank 7).
; Bit 4 ...Was the +3 a missed opportunity?I just wanted to gauge WOS opinion on this. Do people think that the +3 was a bit of disappointment that didn't really advance the hardware as much a…
... days. (I put in a switch to swap the A and ... drives as well as a +3e interface and 512mb SSD when ...Japan Tsunami AppealAs some of you will be aware, I've been tinkering with an open source version of SE Basic that could be distributed with hardware without infringing …
... both sign up on pledge bank and click the 'I did ... SE Basic but you can switch to 48 BASIC with OUT ...The Idiot's guide to 3.5 inch floppies on a +3All help gratefully received, including blow by blow instructions and tutorials. I am interseted in adding a floppy drive (3.5 inch) to my +3 as an …
... the drive letters with the +3e roms but this won't ... . Perhaps you could fit a switch that swapped the drives over.Upgrading the Humble Spectrum 128 +2 (Grey)Hello there my fellow WoS'ers I am at a subtle in-pass in my wants for one of my +2 motherboards. I received this mobo, DOA in a job lot from fleab…
[B]The ability to switch memory contention modes[/B]
< ... /> I'd go with a switch like the one on the ... want the functionality of the +3e on a 32K RAM model ... has more features than the +3e in any case). There are ...enJine: a fast tilemap enginetile engine based on excellent work by Joffa Smifff. here you can download first tech demo. [url=http://ketmar.no-ip.org/tmp/enJine.tap]Get It Now![…
... any graphics, so i can switch that bank to code.enJine: a fast tilemap enginetile engine based on excellent work by Joffa Smifff. here you can download first tech demo. [url=http://ketmar.no-ip.org/tmp/enJine.tap]Get It Now
