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Hooky - hook ZX ROM and rewire RST and NMI to RAM - rantThis is a rather long rant. Not for short tempered. :) The objective is to hook into RST "vectors" and NMI on a Spectrum without affecting the normal…
... (incl. Speccy) do a RAM test
at startup. By writing ... table before
the RAM test / it will get overwriten. Bummer ... =1
0x11EA JR Z,test)_2 ; bad value (zero value ... ' with "real HL" (where mem test ended)
0x1203 LD DE ... -
MGT DISCiPLEBeen a long long time since I posted on here, so Hello everyone ! Picked up some Spectrum stuff last week and the bundle included a MGT Plus D inter…
... working disk drive to fully test it
The DISCiPLE ... -
DEATH is getting old.....I don't know, maybe it's just me getting old or something... There's a few things happening on here that I just don't understand. We have people th…
... hundreds of pounds worth of test equipment - O'scopes, Fluke multimeters ... hundreds of pounds worth of test gear at their disposal need ... -
Help put this back to 16kSo this issue 2 arrived today and ive opened it up just to nosey and confirm that infact it is an issue 2. Now from the help offered in an earlier po…
... one of those he couldnt test as he didnt have rf ... cable or a tv to test it on.I appreciate any ... -
Seriously weird Issue 2 issue... (RAM-related)Hi guys; I have been trying to fix up my Issue 2 and have run across a bizarre issue that I haven't seen elsewhere in the forums. Hopefully one of …
... screen and red bars" RAM test appears, after which the black ... -
Forums broken?Consider this a test messge; I've not been able to read the forums for a couple of days. I keep getting a 'database error' screen come up. Just won…
Consider this a test messge; I've not been able to read the forums for a couple of days. I keep getting a 'database error' screen come up.
Just wondering if it was somehow still possible to post. -
ZX81 Programming...Hi all I've just bought this... [IMG]http://i.ebayimg.com/00/s/NDY2WDU0Ng==/z/iKIAAOSwbqpT4jI-/$_57.JPG[/IMG] and this: [IMG]http://s22.postimg.o…
... over to the 48k to test it etc... I have the ... -
sram replacemnt 64KBi just developed sram upgrade for 64kb 1bit memories. small, efficient, bga :-) below picture from zx128+2. soon, i will test it in others speccys -…
... zx128+2. soon, i will test it in others speccys - 16KB ... -
Great to be back....and with fun to comeHi all, 1982: I bought a new 16k issue 2 in 1982, eventually got microdrives and a dktronics keyboard (version 1). Built a home made eprom programme…
... put my C++ skills to test via the z88dk C compiler ...
