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Any interest in new low-cost mass-storage interface with 512K RAM?I've recently added support to ResiDOS and the +3e ROMs for SD/MMC card interfaces; in particular, ZXMMC (which has no onboard RAM and so is only sup…
... (which has no onboard RAM and so is only supported ... of on-board non-volatile RAM (which would allow it ... be the 512K battery-backed RAM and a snapshot button. ... in the built-in RAM and are instantly available ... run from the built-in RAM, including ZX80 and ZX81 ... -
Wanted 10 - 4116 Ram ChipsHi Can any one help I am trying to get hold of 10 4116 RAM chips for a 48K Spectrum. Does any one know who might stock them. I can get a minimum of …
Hi
Can any one help I am trying to get hold of 10 4116 RAM chips for a 48K Spectrum. Does any one know who might stock them. I can get a minimum of 50 from Hong Kong but only need 10.
Best wishes
Martin Baugh -
Currah MicroSource emulationIt appears to be impossible to emualte the MicroSource in software on the ZX Spectrum SE as hardware polling is required. The following patch is not …
... /> org $8000 ; run in fast RAM
di ; disable interrupts ... />
; copy BASIC ROM to RAM
ld hl,$0000 ... shadow RAM into ROM area
ld a,$03 ; select lower ... -
Testing RAM Chips After RemovalHi I am going to use Winstons Hot Air Gun method of removing the RAM chips from a 4S circuit board. I wish to check the RAM chips, I have a Logic Pr…
... Gun method of removing the RAM chips from a 4S circuit ... . I wish to check the RAM chips, I have a Logic ... -
Unconventional way of diagnosing a faultHi everyone Some time ago I got a 48k Spectrum (issue 3B board) in a pretty bad condition. I believe the power supply transistor TR4 failed, causing…
... the chips in the lower 16KB of RAM are dead, however ... which uses only the lower 16KB of CPU's ... chip (which occupies the lower 16KB on Spectrum's bus ... me from testing the lower 16KB of RAM. I can't ... RAS signals for the lower 16KB of RAM? What happens if ... -
Ram Turbo InterfaceHi all, Can any one tell me if the Ram Turbo Joystick Interface is compatible with Kempston Joysticks? Or are both the Joystick ports Sinclair 1 and…
Hi all,
Can any one tell me if the Ram Turbo Joystick Interface is compatible with Kempston Joysticks?
Or are both the Joystick ports Sinclair 1 and 2
It is the one with the Rom port on it. -
+2B ram chips?Hi all, I have got 2 Plus2B`s and 1 Plus2 gray case. Ok the one Plus2B don`t work, so I tried to see if I could pin down the problem. I changed the …
... br />
There are 4 ram chips on sockets on board ... Plus2B.
The one ram chip IC6 had a pin ... br /> I then removed 2 ram chips IC6 and IC4 replace ... dwith 2 other ram chips that to be honest ... br />
If its the ram chips then I shall buy ... -
+D and RAM Turbo interfaceJust a quick note to let a few guys in particular know that my RAM Turbo does in fact work with my +D interface. I checked continuity through the RA…
... particular know that my RAM Turbo does in fact ... I checked continuity through the RAM Turbo, and found all lines ... used to have a second RAM Turbo, and of course ... is a clone. The other RAM Turbo, which, alas, ... external devices, or som RAM Turbo interfaces don't ... -
Alternative chips for upper RAM blockDoes anybody know of a way to use 4464 chips instead of 4164 for the upper RAM block in a 48K machine? If not 4464 then something a little more avai…
Does anybody know of a way to use 4464 chips instead of 4164 for the upper RAM block in a 48K machine? If not 4464 then something a little more available than the 4164. Winston? Piters??
TIA -
PC Power supply for SpeccyHi all, after 13 years with out playing spectrum games I am eager to play the old games. Thus I got up to the garret checking my old stuff. Two of m…
... and +12V at the 4116 (lower?) RAMs. Reason is as usual ... and +12V direct to the RAM. The speccy boots and I ... -5V and +12 to the ram. The queastion is know are ... -
Wipe Out by KB RamWhilst doing a long-overdue update for Speccy Spoilers, I noticed that one of the latest additions is a game which doesn't appear to be in the archiv…
... was written by a KB. Ram in 1987. It's very ... -
RAM electronics music machineHiya, Just bought a Ram electronics Music Machine from E-bay, and was wondering where I could get some docs for this product, I have managed to find…
Hiya,
Just bought a Ram electronics Music Machine from E- ... -
The direct bus or indirect one... that is the questionThe Ethernet project continues...and I'm in a quandry. So I've managed to implement enough socket library for the W5100 that socket, bind, listen, a…
... uses CMOS which has much lower output impedances, and strong, ... 32K of RAM, with the registers in the lower 16K and ... as you would some paged RAM. That's what I' ... the CPLD to arrange the lower 16K of the Speccy' ... ethernet board's ROM and RAM, and then only two ... -
RAM Upgrade for ZX Spectrum?Check out this [url=http://cgi.ebay.co.uk/ZX-SPECTRUM-ZX-PANDA-16K-EXPANDABLE-RAM-PACK_W0QQitemZ290193305868QQihZ019QQcategoryZ50223QQrdZ1QQssPageNam…
... -SPECTRUM-ZX-PANDA-16K-EXPANDABLE-RAM-PACK_W0QQitemZ290193305868QQihZ019QQcategoryZ50223QQrdZ1QQssPageNameZWD3VQQcmdZViewItem?_trksid=p1723.m144]EBay ... 't have had a 16K Ram expansion pack because a) none ... -
RAM Joystick Interface on a Spectrum +2Having sold one of my competition pro joysticks to a customer who has a grey Spectrum +2, I provided him with a RAM Turbo joystick interface (Kempsto…
... , I provided him with a RAM Turbo joystick interface (Kempston compatible ... -
Source of 4116 ramSomeone on eBay was selling 500 pieces of 4116 ram. The auction ended without bids, but he's willing to sell it in lots of 50 now. Someone in Spain a…
... selling 500 pieces of 4116 ram. The auction ended without bids ... -
Memory paging in 128 KB - 64KB RAM possible?I have found a quote in Spectrum 3 manual (available at WOS) -------------------- In the +3, we have crammed in more than twice the amount of memory…
... fact 131072 bytes of
RAM and 65536 bytes of ROM ... and 48K of RAM ([B]or 64K of RAM with no ROM ... -
Important for Game/Demo DevelopersHello Spectrum-friends, I just finished our new Disc-Magazine SCENE+ with newest games, demos, graphics and sounds from the Spectrum Scene. However,…
... enough memory, do not use RAM below 25000. If you set ... -systems as it needs some RAM for own OS (of course ... RAMTOP to 24499 or even lower, then just try to make ... -
RAM Turbo Interface + DivideHi! I have ordered a Divide (the one without the passthrough) and I obviously want to play using a joystick on my Speccy+. :D Does anyone know (or c…
... (or can try) if the RAM Turbo Interface, which has full ... -
RAM paging and port usageDear users and developers, I'm just trying to find some detail information about RAM paging on the Spectrum 128 and later models, especially those a…
... some detail information about RAM paging on the Spectrum ... we have 4 different RAM pagings depending on the ... TC2068, TS2068
No RAM paging, but always fixed 48k ... the first 8 RAM pages (RAM 0..RAM 7) is paged ... the second 8 RAM pages (RAM 8..RAM 15) is paged ... -
Copy interface ROM content to RamHi all, I have a very rare logitec centronics and disc interface. To save its ROM content I would like to copy it Ram and store it somewhere. How ca…
... would like to copy it Ram and store it somewhere. How ... routine to copy from Ram area to Ram area could be sure ... -
Help using M3 ramFrom the Multiface 3 manual. [quote]6.0 The Use of Extra 8K RAM --------------------------- The MULTIFACE's 8K RAM extension can be accessed and us…
... The Use of Extra 8K RAM
---------------------------
The ... MULTIFACE's 8K RAM extension can be accessed and ... on how to access the RAM extension.[/quote]
... been using the Multiface 128 ram for my own programs, now ... -
Another badly behaved RAM upgradeI have a 48K issue 4A board (yellow it is) that was a 48K machine from new, but only reports 16K working with the Sinclair ZX Test ROM in an Int2. H…
... sockets and installed all new RAM. Same problem!
So ... that are part of the RAM upgrade, they all check out ... thats the whole of the RAM upgrade chippery tested!
ram unity for 16k allows also to plug a joystick?hello I?d like to know if a RAM interface for a 16k spectrum allows also to plug, together, a joystick? Thanks
hello
I?d like to know if a RAM interface for a 16k spectrum allows also to plug, together, a joystick?
ThanksRAM Turbo on +2AHello Spectrum-fans, does anybody know if the RAM TURBO Joystick interface (this with cartridge slot like the INTERFACE2) can be used with a +2A? I …
Hello Spectrum-fans,
does anybody know if the RAM TURBO Joystick interface (this with cartridge slot like the INTERFACE2) can be used with a +2A? I don?t want destroy a machine to test it.
Regards
ThomasTutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…
... 32768) and memorable address in RAM
;initialise score
... ,201 at address 33000 in RAM
We'll assemble ... in some free bytes in RAM.
Now for the ... machine stack is in the RAM.
To write to ... /> If it is odd, lower the road position in hl ...Diagnosing Spectrum 48k (faulty RAM chip?)I have a Spectrum 48k (I believe it may be an upgraded 16k model) that doesn't work, and never has ever since the owner gave it to me. When you turn …
... joints for the bottom-left RAM chips seem to be very ... physically on the board which RAM chip the display attributes is ... on. This all points towards RAM for me - I don't ...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 …
... some light as to how RAM paging actually works, at a ...How much ram has my ZX Spectrum?How can I see how much ram my ZX Spectrum has? C64 has this info in the title screen, the Spectrum not. Thanks! Micky
How can I see how much ram my ZX Spectrum has? C64 has this info in the title screen, the Spectrum not.
Thanks!
MickyTest single ram chips?Is it possible to test single ram chips? Micky
Is it possible to test single ram chips?
Micky
