Many big important things:

– Add support for undocumented 8085 instructions
– Convert undocumented  8085 instructions to 8086
– Add new CPU types and categorize CPU types correctly
– Fix macro expansion in some situations
– Improve 8080 optimizations
– Improve documentation
– Other improvements

docs/api/command-line.md

@@ -83,15 +83,16 @@ This may cause problems if the parameter table is stored next to a hardware regi
 Whether the compiler should allow for invalid characters in string/character literals that use the default encodings and replace them with alternatives.
 `.ini` equivalent: `lenient_encoding`. Default: yes on Apple II, no otherwise.
 
-* `-fillegals`, `-fno-illegals` – Whether should emit illegal (undocumented) NMOS or Z80 opcodes.  
+* `-fillegals`, `-fno-illegals` – Whether should emit illegal (undocumented) NMOS 6502, Intel 8085 or Z80 opcodes.  
 `.ini` equivalent: `emit_illegals`.
 Default: no.
 
 #### 6502-related
 
-* `-fcmos-ops`, `-fno-cmos-ops` – Whether should emit CMOS opcodes.  
+* `-fcmos-ops`, `-fno-cmos-ops` – Whether should emit 65C02 opcodes.  
 `.ini` equivalent: `emit_cmos`.
 Default: yes if targeting a 65C02-compatible architecture, no otherwise.
+
 * `-f65ce02-ops`, `-fno-65ce02-ops` – Whether should emit 65CE02 opcodes.  
 `.ini` equivalent: `emit_65ce026`. 
 Default: yes if targeting 65CE02, no otherwise.
@@ -128,13 +129,21 @@ Use a software stack for stack variables.
 
 #### 8080/Z80-related
 
+* `-f8085-ops`, `-fno-8085-ops` – Whether should emit Intel 8085 opcodes.  
+`.ini` equivalent: `emit_8085`.
+Default: yes if targeting Intel 8085 architecture, no otherwise.
+
+* `-fz80-ops`, `-fno-z80-ops` – Whether should emit Z80 opcodes.   
+`.ini` equivalents: `emit_z80` and `emit_x80`.
+Default: yes if targeting a Z80-compatible architecture, no otherwise.
+
 * `-fshadow-irq`, `-fno-shadow-irq` –
 Whether the interrupt routines should make use of Z80 shadow registers.
 `.ini` equivalent: `use_shadow_registers_for_irq`. Default: yes on Z80, no otherwise.
 
 * `-fuse-ix-for-stack`, `-fuse-iy-for-stack`, `-fno-use-index-for-stack` –
 Which of Z80 index registers should be used for accessing stack variables, if any. 
-`.ini` equivalent: `ix_stack` and `iy_stack`. Default: IX on Z80 and 8086, no otherwise.
+`.ini` equivalent: `ix_stack` and `iy_stack`. Default: IX on Z80, no otherwise.
 
 * `-fuse-ix-for-scratch`, `-fno-use-ix-for-scratch` –
 Allow using the IX register for other purposes.
@@ -144,6 +153,11 @@ Allow using the IX register for other purposes.
 Allow using the IY register for other purposes.
 `.ini` equivalent: `iy_scratch`. Default: no.
 
+#### 8086-related
+
+Compiling to 8086 is based on translating from a mix of 8085 and Z80 instructions to 8086.
+See [the 8086 support disclaimer](./../lang/x86disclaimer.md).
+
 ## Optimization options
 
 * `-O0` – Disable all optimizations except unused global symbol removal.

docs/api/custom-platform.md

@@ -29,18 +29,21 @@ if a line ends with a backslash character, the value continues to the next line.
     
     * `z80` (Zilog Z80)
     
+    * `strictz80` (Z80 without illegal instructions)
+    
     * `i8080` (Intel 8080)
     
     * `i8085` (Intel 8085)
     
+    * `strict8085` (Intel 8085 without illegal instructions)
+    
     * `gameboy` (Sharp LR35902; experimental)
     
     * `i8086` (Intel 8086; very experimental, very buggy and very, very incomplete –
     see the [8086 support disclaimer](../lang/x86disclaimer.md))
 
-* `encoding` – default encoding for console I/O, one of 
-`ascii`, `pet`/`petscii`, `petscr`/`cbmscr`, `atascii`, `bbc`, `jis`/`jisx`, `apple2`,
-`iso_de`, `iso_no`/`iso_dk`, `iso_se`/`iso_fi`, `iso_yu`. Default: `ascii`
+* `encoding` – default encoding for console I/O. Default: `ascii`.
+See [the list of available encodings](../lang/text.md).
 
 * `screen_encoding` – default encoding for screencodes (literals with encoding specified as `scr`). 
 Default: the same as `encoding`.
@@ -51,12 +54,18 @@ Default: the same as `encoding`.
 
     * `emit_illegals` – whether the compiler should emit illegal instructions, default `false`
     
-    * `emit_cmos` – whether the compiler should emit CMOS instructions, default is `true` on compatible processors and `false` elsewhere
+    * `emit_cmos` – whether the compiler should emit 65C02 instructions, default is `true` on compatible processors and `false` elsewhere
 
     * `emit_65816` – which 65816 instructions should the compiler emit, either `no`, `emulation` or `native` 
     
     * `decimal_mode` – whether the compiler should emit decimal instructions, default is `false` on `ricoh` and `strictricoh` and `true` elsewhere;
     if disabled, a software decimal mode will be used
+
+    * `emit_8085` – whether the compiler should emit Intel 8085 instructions, default is `true` on compatible processors and `false` elsewhere
+
+    * `emit_x80` – whether the compiler should emit instructions present on Sharp LR35902 and Z80, but absent on Intel 8080, default is `true` on compatible processors and `false` elsewhere
+
+    * `emit_z80` – whether the compiler should emit Zilog Z80 instructions not covered by `emit_x80`, default is `true` on compatible processors and `false` elsewhere
     
     * `ro_arrays` – (deprecated) whether the compiler should warn upon array writes, default is `false`