-
Fuse tests - INC BC causes contention delayHi all, In the FUSE test suite it has the following for the output of opCode 0x3 (INC BC): 0 MC 0000 4 MR 0000 03 4 MC 0001 …
... /> contend), PR (port read), PW (port write) or PC (port contend).
is ... the address (or IO port) affected.
is the byte ... -
New Windows Spectrum Emulator: CSpect V0.2 ZXSpectrum emulator by Mike DaillyNew Windows Spectrum Emulator: CSpect V0.2 ZXSpectrum emulator by Mike Dailly (Found on SpecNext Facebook-Page) Info and Download (=klick "CSpe…
... the debugger
Sprite shape port has changed (as per spec ... /> https://www.specnext.com/tbblue-io-port-system/
https://www.specnext ... /> Layer 2 access
===================
port $123b
bit 0 = WRITE ... -
ZX in FPGA...Hmm..seems nobody is interested in a replacement PCB with FPGA...well..heading towards next FPGA projects then...C64 and others (o; [ This Messag…
... . Or just a big generic IO-port connector and then adaptor plug ... -
Z80 core testing ?OK, my z80 core is almost finished (apart from RRD, RLD, and block instructions except LDI,LDIR,LDD,LDDR). I run the 48K rom and hurray, it resets co…
... contend), PR (port read), PW (port write) or PC (port contend).
is ... the address (or IO port) affected.
is the byte ... -
Clone Project feedbackFinally i now have some time to start again with my clone project. I have decided to drop the 48k project and go directly on a 128k clone. This migh…
... decided to add an extra IO port for an Ethernet controller.
Press any keyI need to write a z80 function that waits for a user to press any key. As it is possible that the user may be pressing a key when the function is cal…
... . So, you end up reading IO port $xxFE instead of the keyboard ...Press any keyI need to write a z80 function that waits for a user to press any key. As it is possible that the user may be pressing a key when the function is cal…
... . So, you end up reading IO port $xxFE instead of the keyboard ...DivIDEI'm interested in getting one of these, but the site that apparently sells the prebuilt units - [url="http://raww.org/2079"]http://raww.org/2079[/url…
... used some of the free io port for +3e, it can stop ... words, ports xxxxxxxx 101xxx11 and port xxxxxxxx11100011 must be not driven ...Draft specs for TZX v1.20Hi all! In the attempt to restart the development of the TZX format, I've put online the first version of the draft document [1]. At the moment ther…
... of tapes this way ignores IO port contention and is therefore incorrect ...Spectrum Emulator for Windows XPHi all. I'm struggling to get any emulators to work with Windows XP. I'm just after an emulator with Joystick support. Any suggestions? Thanks
... hints towards memory contention and IO port contention. I'm sure the ...Spectrum Emulator for Windows XPHi all. I'm struggling to get any emulators to work with Windows XP. I'm just after an emulator with Joystick support. Any suggestions? Thanks
... hints towards memory contention and IO port contention. I'm sure the ...Interface rom - Need help to dump itHi, I have temporarily an interface that is similar to a multiface. It has an NMI button and displays a menu where states can be saved and pokes ent…
... suggested to me to try port scanning... and it worked![/QUOTE ... looks a lot like an IO port address. Course, 0x1f is the ... Kempston port and also the Beta 128 ... command port, so I hope your Spectrum ...How many different versions of the divIDE are there?So what gives with these interfaces? Some have thru ports, some have built in joystick interfaces - some are based upon one design, one is designed …
... it has a through port so I can get ... You have a 24 bit IO port which can be used to ... have a Centronis printer port. It is also possible ... using the 24 bit port as fast data transfer ... divIDE with additional Kempton joystick port and special Reset logic. ...sinclair zx spectrum issue 6a (again) - how to repairHi All, Is there someone who may explain what these jumpers can be used for. [url]http://forest.no-ip.org/repair/jumpers.gif[/url] <- this is from …
... ULA from responding to odd IO port numbers (by switching +5V into ...Joysticks on Amstrad boardsNever mind the oddly wired connectors for this post... as we all know, the joystick ports on the +2 and +3 are Sinclair Interface II equivalents. Is…
... on the other hand uses IO port 31, rather than the keyboard ... port. The principle however is the ... you would need a config port which would require additional decode ...2nd Keyboard for 2-player games?Instead of trying to use keys that we don't like or use a joystick for the 2nd player on a 2-player game, could a second keyboard be used? And if so,…
... are in question, the joystick port already emulates keypresses.
port. This would also work on ... and tie into the keyboard IO port addy, or you could plug ... that used the keyboard IO port instead of port 31 (Kempston standard) to ...RAM PagingCan anyone shed some light as to how RAM paging actually works, at a hardware level (so not POKE xxxxx stuff). I know about CE and OE lines on DRAMs …
... .
- something to decode the IO port used to program the flip ...Announcing: The +2A/+3 FLASH ROM adapter boardAs I've mentioned in a couple of other threads, this project is coming along quite well now, so I thought I'd post some details up here. I've built …
... basic bank switching on an IO port is a 74HCT138 (or other ... port decoding mechanism, if you only ... have one port to decode it may be ...Announcing: The +2A/+3 FLASH ROM adapter boardAs I've mentioned in a couple of other threads, this project is coming along quite well now, so I thought I'd post some details up here. I've built …
... basic bank switching on an IO port is a 74HCT138 (or other ... port decoding mechanism, if you only ... have one port to decode it may be ... chip.
Perhaps decoding a port to switch bank could be ...Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…
... about to forget software serial port on Speccy and use real ... writing or reading one single IO port.
visit [url]http ...Divide CF cardsI have recently got a Divide but I'am waiting for my Compact Flash card to come form Amazon. However, the Divide states that the CF card needs to be …
... peripheral standardisation with regards to IO port numbers but I'll be ...Divide CF cardsI have recently got a Divide but I'am waiting for my Compact Flash card to come form Amazon. However, the Divide states that the CF card needs to be …
... peripheral standardisation with regards to IO port numbers ... [URL="http://www.zxshed ...SPECTRA New from Paul FarrowLooks good! Read about it [URL="http://www.fruitcake.plus.com/Sinclair/Spectrum/Spectra/SpectraInterface.htm"]here[/URL]
... the ZXATASP states it uses IO port $xx9F. It therefore will ... SPECTRA interface filters all IO requests for port $7FDF from its ... />
The SpecDrum decodes IO port address $xxDF and so when ... to 1 when accessing the IO port.
Therefore, SPECTRA ...WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…
... or read from an uncontended IO port during the ULA's screen ...The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…
... the correct value to the IO port that writes to said latch ...The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…
... the correct value to the IO port that writes to said latch ...maximum addressable RAM for a Z80 using bank switching?What is the maximum addressable RAM for a Z80 using bank switching? The Enterprise64 home computer could address up to 4MB, is this the limit for a …
... /> 3) hardware implementation
IO Register swith maybe not the ... for address 0x100-0x103 and IO port 0x100.
So, you ... then send, say 1, to IO port 0x100 and bank switcher switches ... /> of ram. And using different IO value you can choose where ...Interface 1 bisOk, well the postmans just been and brought with him my new arrival, the Interface 1 bis. So as promised I thought I'd share some initial usage exper…
... is connected to a simple IO port that is polled by the ...Interface 1 bisOk, well the postmans just been and brought with him my new arrival, the Interface 1 bis. So as promised I thought I'd share some initial usage exper…
... is connected to a simple IO port that is polled by the ... /> You are right, but the port is shared with the 'mouse ...
