The following alternate roms are in alternate_roms directory:


aszmice07.rom - ASZMIC E07 ROM - ZX80/ZX81 Replacement ROM which includes assembler & debugger
This rom is actually 4K long, but it is copied twice to be 8k length to work on ZX81

sp-rom.rom: The SP ROM by Comprocsys Ltd was an add-on card for the ZX81 that provided 256 x 192 bitmapped graphics, reading and writing of EPROMs and communication with peripherals through a Zilog 8255 PIA chip. It could be used in conjunction with the Comprocsys ASZMIC ROM or without (via ZX81 BASIC commands).
Requires WRX, Ram extensions on 2000H, 8000H and C000H. ROM must be loaded on address 2000H
Info: https://derekbolli.wordpress.com/2015/06/05/zx81-sp-rom-disassembly/

ace.rom: patch by "Dutra.Lacerda" (https://t.me/JupiterACE)
3 words Restored, CODE word added (Sieve*10=5m W=16.4x) GPL3 DISTRO

opense.rom  OpenSE BASIC Version 3.1.2, For Spectrum 48K
http://sourceforge.net/projects/sebasic/


sebasic4_rom1.rom SEBASIC standalone ROM 1 supporting the normal 32x24 mode, Version 4.1.0, For Spectrum 48K
https://github.com/cheveron/sebasic4/wiki

derby_p_32K.rom, derby_pp_64K.rom: Derby+ and Derby++ roms, for Spectrums with 128KB of RAM
and 32K or 64 KB of ROM
https://zx.itch.io/derbypro


plus3e_mmcen3eE.rom  plus3e_mmces3eE.rom
+3e ROMs v1.38. For Spectrum +2A/+3 models
http://www.worldofspectrum.org/zxplus3e/p3eroms.html
The first on English, the second on Spanish
Both for mmc interface, you can enable MMC and ZXMMC emulation on ZEsarUX. 

plus3e_sm8en3eE.rom plus3e_sm8es3eE.rom
+3e ROMs v1.38. For Spectrum +2A/+3 models
http://www.worldofspectrum.org/zxplus3e/p3eroms.html
The first on English, the second on Spanish
Both for ide 8-bit simple



plus2c.rom ZX Spectrum Plus 2C, For Spectrum 128k/+2
Unofficial ROM by Andrew Owen


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plus2b.rom: +2B ROM Set. For Spectrum +2A/+3 models

The +2B ROM set includes the following:

ROM 0 - debugged UK 128 editor 
ROM 1 - original 16K BASIC ROM
ROM 2 - RT Russell's BBC BASIC (Z80) ported by JG Harston:

        http://mdfs.net/Software/BBCBasic/Spectrum/

ROM 3 - OpenSE BASIC 3.1.1:

        http://sourceforge.net/projects/sebasic/

The menu options are as follows:

* SE BASIC
  fully debugged, optimized, and enhanced version of Sinclair BASIC

* BBC BASIC
  arguably the best version of classic BASIC with inline Z80 assembler

* 128 BASIC
  fully debugged, new menu system, and virtual numeric keypad support

* 48 BASIC
  the original 1982 ROM, memory paging switched off

* USR 0
  the original 1982 ROM, memory paging enabled




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Z88UK220.rom  
Z88UK300.rom 
Z88UK400.rom
Z88OZ431.rom  
Z88OZ441.rom  
Z88OZ45.rom
Z88OZ46.rom
Z88OZ47.rom

Different Z88 ROM versions. The default is Z88OZ47.rom.


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tk90x_v1br.rom: Brasilian 
tk90x_v2es.rom: Fixed tk90x rom


tk95es_modif.rom: Microdigital TK95 Spanish ROM with modifications by Rodolfo Edison Guerra:
* Fixed messages:
"Variable inexiste" to "Variable incierta"
"Ok" to "OK"
"TK Color Computer" to "TK 95 - Color Computer"
* Changed symbols Sigma to pound, and Delta to (c) 



