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DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]
... /ROMCS line high to disable the Spectrum ROM?
The chips you ... -
Corrupt paper on zx spectrum 48kHi. When I power up my spectrum (issue 3) I get the light grey border, but the paper is black and it switches between thin red vertical lines and thi…
... /Sinclair/Interface2/Cartridges/Interface2_RC_ZXC3.htm"]ROM board[/URL] in a ... you can replace the Spectrum ROM chip. This does however ... some modifications as the existing ROM has a different pin- ... RAM is suspected, you can disable it ([URL="http://www. ... -
Barn find #4I think this is some sort of backup device. Its got "007" on the motherboard and the mice have chewed the buttons. Will do a little research later in…
... run binary part that will disable interrupts, say "press SAVE button ... will switch to on-board ROM) and any keyboard button (program ... will copy 2K of the ROM to higher RAM
6 ... -
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 …
... to log.1 = disable connection of external rom/memory for other devices ... is MF3 memory disconnect + disable reading of ports #BF(reading ... (from MF128 to ZX) + disable memory connection if CPU jump ... to address #66 + disable next connection of MF128 memory ... -
Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…
... am cheating and using a ROM routine... but I am but ... ; LD A,21 "!"
D7 ; RST 10
C9 ; RETurn to ... nightmare....
Whats the ROM magic?
Time to ... look up the Rom Dissasembly book.. (very nice!)
New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…
... for 1st half of the ROM and B for 2nd half ... 0 is used to choose ROM half (0 - A, 1 - B ... /> bit 7 is used to disable onboard ROM (switch back to BASIC ...Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…
... 48 (H)
D7 ; RST 10
C306F0 ; JP ... LD A,20 " "
D7 ; RST 10
3E57 ; LD A ... LD A,21 "!"
D7 ; RST 10
C300F0 ; JP 61440 ... />
still using stargate rom jumps to work the magic ...Break into programIs there any way of stopping people using the break option in my software productions so they can list the code.
... to enable; GOSUB 9996 to disable. There's no direct USR ... it is called by the ROM whenever an error report occurs ... (a+1)
9995 REM disable trap, restore standard error return ...DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]
... let the user enable or disable the 1K5 resistor which is ... :
a. 16/48K - will disable the 1K5 resistor
b ... disable the resistor but enable the control of the 2 other ROM ...
