-
Internal ROM expansionHas anybody designed a multiple-ROM interface that plugs into the internal ROM socket instead of plugging onto the edge connector? It would be useful…
I unsoldered my ROM and replaced it with a socket so I could plug an EPROM in, and also replaced the H-N links with molex pins. -
Smokin... more 48k woesHi, it looks like I've converted another Spectrum 48K+ into a smoke machine. I'd been rebuilding an Opus Discovery unit and everything looked good. …
... movable upper RAM selection links, and ROM H-N links also.
B -
Smokin... more 48k woesHi, it looks like I've converted another Spectrum 48K+ into a smoke machine. I'd been rebuilding an Opus Discovery unit and everything looked good. …
... movable upper RAM selection links, and ROM H-N links also.
B ... -
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 …
... I'm fairly certain the N just refers to the package ... output.
The H/N jumpers select which ROM type ... .e. either both at H or both at N.
... LK3, and LK4 are bypass links for connecting the ULA to ... />
The TI/OKI-H/L-4/3 jumpers should ... -
First time capacitor replacementHi, I have an Issue 2 board, that i wish to start with recapping as advised on here, as they look to be all original. (Same with V3 board, but going…
... goes to the ROM selection links (H / N on circuit board) and temporary ... -
ZX Spectrum Test PCB I recently read about one of these (I think it may have been the Retroleum site but I am not sure) and I thought "What a great idea" . As pictured …
... the heatsink are the H-N ROM selection links. Details of which ROM ... ROM chips use the two N links.
[b][i]Mark ... -
Quick questionHello, can someone tell me what the screen looks like when you power a 48k spectrum that has no ROM chip installed ? Thank you. François
... via resistor R33 to the H / N selection links.
/MREQ comes ... ) and also goes to the H / N selection links.
Both of ... the ROM and which selection links are fitted on the board ... -
12V missing on an issue 3I’ve been working on an issue 3 Spectrum +. It shows thin distorted vertical stripes on bootup. +5 and -5V are all right but the 12V line measures ro…
... goes via the ROM selection links H/N) ? And also to R33 (680 ... -
New Functions for Sinclair BasicA total of 52 new functions can be added to Sinclair BASIC; 26 numeric functions (A-Z) and 26 string functions (A$-Z$). Owing to the internal structu…
... FN C$(n)=CHR$ INT (n/256)+CHR$ (n-INT (n/256)*256)
DEF FN D(h$)=(CODE h$(1)-48-7*(h$(1)>"9 ... CODE h$(2)-48-7*(h$(2)>"9"))*256+(CODE h$(3 ... /> [code]
DEF FN G(n)=n/PI*180
[/code]
DEF FN H$(n)=CHR$ (INT (n/4096)+7*(INT (n/4096)>9 ... -
storing machine code in BASICA couple of years ago I posted a routine for storing machine code between PROG & VARS, based on an idea in Toni Baker's "Mastering Machine Code". Thi…
... a$() is set as n-32 because there will be ... 2 DEF FN d$(l$,n)=l$+CHR$ 14+CHR$ ... 0+CHR$ FN g(n)+CHR$ FN h(n)+CHR$ 0+",":
... 9164: INPUT "New ";n: DIM a$(n-32): LET nv=FN ... p(va)+n+1:
LET s ... D",FN g(n))+FN d$("E",FN h(n))
GO ... -
ZX mask ROM chips curiosityJust out of curiosity... what willl happen if we have a Hitachi ROM and the bridging onboard is on the N positions (for NEC)? While I was searching …
... bridging onboard is on the N positions (for NEC)?
H?
edit:
Here ... has been replaced and no H N bridges have been changed.
NEW CRONOSOFT RELEASES: HOP 'N' CHOP & GLOOP! Now availableTwo new Cronosoft releases for the Spectrum are now available for purchase online, or by mail order: [url="http://www.cronosoft.co.uk"]www.cronosoft…
Orders duly placed for H'n'C, Gloop and Dead or Alive - keep up the excellent work Simon!New Functions for Sinclair BasicA total of 52 new functions can be added to Sinclair BASIC; 26 numeric functions (A-Z) and 26 string functions (A$-Z$). Owing to the internal structu…
... DEF FN H$(n)=CHR$ (INT (n/4096)+7*INT (INT (n/4096)/ ... )+CHR$ (INT (FN V(n,4096)/256)+7*INT (INT ... (FN V(n,4096)/256)/10)+48)+CHR ... FN D$(n)=CHR$ (INT n+7*INT (INT n/10)+48 ... as long as [I]n[/I] is in range 0 ...
[code]DEF FN H$(n)=FN D$(n/4096)+FN D$(FN ...New Functions for Sinclair BasicA total of 52 new functions can be added to Sinclair BASIC; 26 numeric functions (A-Z) and 26 string functions (A$-Z$). Owing to the internal structu…
... ]INT((CODE H$(n)-48)/17)[/code] part with [code](H$(n)>"9 ... ")[/code]:
[code]DEF FN D(H$)=(CODE H ... $(1)-48-7*(H$(1)>"9 ... ]DEF FN H$(n)=CHR$ (INT (n/4096)+7*(INT (n/4096)>9 ...A new Apple 1 emulator for the SpectrumHi all, I'm happy to announce a new Apple 1 emulator for the Sinclair ZX Spectrum! It's a port of Simon Owen's Apple 1 emulator for the SAM coupe to…
... ,a
ld h,table/256
ld h,(hl)
jp ... can change the LD H,N in LD H,B reaching every code ...St. Michael Micromasters: Computer GamesHi, The [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=2000988"]St. Michael Micromasters: Computer Games[/URL] book doesn't currently have a…
... (n)=r:let y(n)=c:let p(n)=v:let q(n)=h:next n ... :for n=1 ... to 50*w:next n ... (n)=d:let v(n+4)=-d
160 let h(n)=e:let h(n ... +4)=-e:next n ...St. Michael Micromasters: Computer GamesHi, The [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=2000988"]St. Michael Micromasters: Computer Games[/URL] book doesn't currently have a…
... 4000:print chr$(n)
920 let n=n+1:next c ... 2000 def fn r(n)=int(rnd*n)+1
2010 randomize ... /> 240 input"pattern length ";n:gosub 3000
250 for ... 2000 def fn r(n)=int(rnd*n)+1
2010 randomize ... (9)p+2 then let h=h-n
310 if a$=" ...Your views on...Tirnanog[url=http://www.worldofspectrum.org/infoseekid.cgi?id=0005292]Tirnan?g[/url] Right! First off, you guys need to be really careful about what you say…
... should mean "CROSS ROAD TEN N", e.g. ten paces from ... two symbols: L=S and H=N. Imho it is too unreal ...I want one of these!Maybe. [url]http://gizmodo.com/5365299/courier-first-details-of-microsofts-secret-tablet[/url] Can't deny that it looks sweet! Should be fun to p…
... , RPG's like diablo (hack n slash with stylus/finger!), point ... screen clean and clear for h'n's-ing. A truly multitaskingoneus ...Bit functions speedI just stared nonplussed at the documentation for the bit functions. Apparently, if you're using the accumulator, using AND and OR is faster than se…
... /V are not affected
H N are reset
See instruction ... 010
E 011
H 100
L 101
H N are reset
P/V ...new member would like advice about MIAi have only joined today and i would like to know of a modern way of uploading data from cassette to pc or mac and then converting to tzx for MIA pre…
... 5=High-Pass) [4]
h: set upper cutoff freq [4100 ...Seeking alternatives to DATA statementsAnyone know of any memory saving alternatives to storing a list of numbers, other than using DATA statements or poking data into addresses?... Im ti…
...
30 DATA "7f7g!e!h"
31 DATA "5V7Y!g6_ ... /> 89 DATA "+h+e!n*^"
90 DATA "+h+e+h+n"
91 ... DATA "7l+j!n*W"
h"
94 DATA "+c+h+l7j"
95 DATA "+h!l*Y+h ... "
96 DATA "+e+h ...broken 48K, strange screenwell I finally socketed all lower 16K ram chips, (8 of them in a row near corner, not those 4 in two rows) and replaced them with new ones but it did…
... must be exchanged, therefore the 'H/N' jumperblock is available on the ... diodes, soldered 'somewhere' into the H/N block, or by usung a ...Great Giana SistersI read that the GGS was considered a Mario-infringement, and therefore it didn't come out on the Speccy, but why was it OK to publish it on ye olde C…
... though Phil South (of YS/H'n'T) mentions that they didn ...rubber key Spectrum 48k problem :(when i plug the spectrum in all i get is a black screen with a red border and sometimes flashing blocks. the spectrum worked until about 20 mins ago…
And change the H-N jumper field using two diodes, as explained somewhere on this forum.Ebay bargains!I recntly picked up a real bargain on Ebay: a 128k spectrum with (it advertised) 60+ games/covertapes, but when I counted, there were 130! I haven't …
... />
When you click o n links from ebay of sold items ...numbers to binaryHi everyone, I have looked through the manual and have found nothing. How do you change a number to binary easily? I know you can go binary to decim…
... gone before, here's FN n$(n$,o,p) which converts ...
FN t$(n,b) - convert 'n' from decimal To base ... /> FN l(n,b) - remainder of n/b
FN h(n,b) - ... quotient of n/b (INT ...
[code]
DEF FN n$(n$,o,p)=FN t$(FN ...
