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DivIDE black editions availableI have about 6 more DivIDE black editions ready, and will finish more this week. [B]DivIDE 57c BLACK edition including ESXDOS 0.8.5 and 1GB CF card[…
... a PAL line and the /M1 signal, so it might be ... -
Hardware description - MULTIFACE 128I make schematic of MULTIFACE 128 (v36) from PCB layers downloaded from WOS. But all PCB layers on WOS contain some bugs, absent signals, etc.. Now …
... ). Address decoder detect is CPU M1 cycle at address #66 or ... -
Machine code optimisationI'm geting back into z80 coding and wonder what the best way of showing how efficient the code is. I've got Rodney Zaks book and see there are timin…
... cases, the only) M cycle (M1) corresponds to instruction fetch from ... -
Quick fix for four joysticksHere's a quick modification to add four joysticks to any Speccy. This assumes you already have two Sinclair ports. [URL="http://joefish.co.uk/specc…
By the way, one of the pins in the edge connector that is wired in is 'M1!' - I can't find any thorough enough documentation, so can anyone tell me what this pin does? -
Quick fix for four joysticksHere's a quick modification to add four joysticks to any Speccy. This assumes you already have two Sinclair ports. [URL="http://joefish.co.uk/specc…
... that is wired in is 'M1!' - I can't find any ... bus, then not need signal M1. You can use any other ... instead A5 and A5 instead M1 then new joystick port address ... -
Quick fix for four joysticksHere's a quick modification to add four joysticks to any Speccy. This assumes you already have two Sinclair ports. [URL="http://joefish.co.uk/specc…
... bus, then not need signal M1. You can use any other ... instead A5 and A5 instead M1 then new joystick port address ... line and connect it to M1, does that mean it would ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... AF
ld c, (hl) ; m1 to C
inc hl ... ; next
ld a, c ; m1 to A
ld c ... E
push de ; stack m1 and n1
inc hl ... DE'
pop hl ; m1 and n1 to HL'
push hl ; stack m1 and n1
sbc hl ... -
+3 with dead expansion portI bought a +3 from a WoS user. So far, the computer works as expected, but when an interface (e.g. DivIDE (configured correctly) or Multiface3) is co…
Both interfaces use M1. Maybe your Z80 is defective. -
+3 with dead expansion portI bought a +3 from a WoS user. So far, the computer works as expected, but when an interface (e.g. DivIDE (configured correctly) or Multiface3) is co…
... a Z80 with a faulty M1 line. Had a 128K+2 ... -
+3 with dead expansion portI bought a +3 from a WoS user. So far, the computer works as expected, but when an interface (e.g. DivIDE (configured correctly) or Multiface3) is co…
... on your +3 fixed the M1 fault but there's a ... -
Diagnostic Board (Winston designed) PCB'sHi everyone, I had these made earlier in the year, built mine then promptly mislaid the others until now :) and I'd like to offer these to the commu…
... . This worked correctly including the "M1 test" and the disabling of ... -
Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... way. If you shorted the !M1 line to -12v then you ... -
Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... way. If you shorted the !M1 line to -12v then you ... -
Toasted +3Oops.. I shorted one of my +3 (being clumsy with multimeter, doh) when measuring PSU connector pins :D Any immediate guesses what exactly died on thi…
... /> Same goes for stuff like /M1, /MREQ, /RD, /WR etc - if ... -
Seen any ebay madness?? post it here !!!What with some high prices fetched on speccy games over the past few days , thought it might be an idea to keep a WOS record of some of the higher fi…
... if there is issues with M1 lines, I'd rather sell ... -
New CPU and Spectranet oddity.I have no reason to suspect this problem is due to a fault/poor design of the Spectranet, but understanding what it does at system initialisation may…
... exactly the same as the M1 signal being bad - it'll ... -
Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…
... lines !IOREQ and !RD (or !M1 for some reason instead) and ... from the interface).
/M1 is sometimes included so that ... interrupt (the Z80 CPU drives /M1 and /IORQ low to signal ... -
Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…
... . I also found out the !M1 was used to distinguish between ... appreciate that without using both !M1 and !RD together you could ... three of !IORQ, !RD and !M1. If you don't I ... -
Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…
... , since it's not checking !M1. How does checking two extra ... -
Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…
... , since it's not checking !M1. How does checking two extra ... low during an interrupt acknowledge. /M1 is sometimes included to "make ... -
Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…
... low during an interrupt acknowledge. /M1 is sometimes included to "make ... that ignore !RD and use !M1, which seems strange if that ... -
Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…
... !IOREQ (low), !RD (low) and !M1 (high) are three triggers that ... -
DivIDE 57c helpJust bought one of the old DivIDE and wanted to setup my cf card so that its all ready when i get it. What do I need to prep the card and put the ri…
... /> - you may suffer from bad M1 line of Z80, that's ... -
IF1bis StabilityI just thought I would start a different thread relating to the IF1bis, and leave the copyrighters to it elsewhere...:-P I've had mine for a few mon…
hash function permutation tableI'm using a simple Pearson hash function to generate keys for a $(103,6) array using a 256-byte permutation table. How do I arrange the entries in th…
... digit multipliers in
b = m1*x1 + m2*x2 + m3*x3 ...Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…
... bc,$33f
jr m1
x2 djnz x3< ... inc b
jr m1
x6 add a, ... bc,$4ff
jr m1
n1 inc c ... b,6
jr m1
x3 djnz x4< ... bc,$51f
jr m1
x5 djnz x6< ...Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…
... bc,$33f
jr m1
x2 djnz x3< ... inc b
jr m1
x6 add a, ... bc,$4ff
jr m1
n1 inc c ... b,6
jr m1
x3 djnz x4< ... bc,$51f
jr m1
x5 djnz x6< ...
