Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
apollo_core:start [2020/02/28 10:18]
muaddib
apollo_core:start [2020/09/27 09:50] (current)
muaddib
Line 1: Line 1:
 ====== 68080 Core ====== ====== 68080 Core ======
  
-{{:apollo-01.png?​nolink&​128|}}+{{:crom_apollo-02.png?​nolink&​128|}}
  
 ===== Overview ===== ===== Overview =====
Line 7: Line 7:
 **68080** is a new CPU that is code-compatible with the **Motorola 68k** processors. **68080** is a new CPU that is code-compatible with the **Motorola 68k** processors.
  
-It is an affordable CPU for your classic Amigas (or Amiga compatibles) that is **much faster than the fastest 68060**. It is compatible with all CPUs and [[apollo_core:​fpu|FPUs]] of the Motorola 68000 family. [(Few rare instructions are currently not supported.)] ​ It is designed according to modern CPU standards, is fully written in **VHDL**, and is intended to run on [[https://​www.intel.com/​content/​www/​us/​en/​products/​programmable/​cyclone-series.html|Altera Cyclone FPGAs]].+It is an affordable CPU for your classic Amigas (or Amiga compatibles) that is **much faster than the fastest 68060**. It is compatible with all CPUs and [[apollo_core:​fpu|FPUs]] of the Motorola 68000 family. [(MMU-related ​instructions are currently not supported.)] ​ It is designed according to modern CPU standards, is fully written in **VHDL**, and is intended to run on [[https://​www.intel.com/​content/​www/​us/​en/​products/​programmable/​cyclone-series.html|Altera Cyclone FPGAs]].
  
 **AmigaOS 3.x** currently recognizes this new CPU as a **68040**. **AmigaOS 3.x** currently recognizes this new CPU as a **68040**.
Line 51: Line 51:
 | Amiga 1200   | MK2          | 68060   ​| ​ 66 MHz |   65 | ++++++++++++++++ |  | Amiga 1200   | MK2          | 68060   ​| ​ 66 MHz |   65 | ++++++++++++++++ | 
 | Amiga 600    | Vampire 600 V2   | SILVER6 |     x15 |  173 | +++++++++++++++++++++++++++++++++++++++++++ |  | Amiga 600    | Vampire 600 V2   | SILVER6 |     x15 |  173 | +++++++++++++++++++++++++++++++++++++++++++ | 
 +
 +More detailed comparisons to an overclocked 68060 can be found [[http://​www.apollo-core.com/​knowledge.php?​note=30521|here]].
  
 ---- ----
Line 61: Line 63:
  
 ^ Feature ^ 68000 ^ 68020 ^ 68030 ^ 68040 ^ 68060 ^ 68080 ^  ^ Feature ^ 68000 ^ 68020 ^ 68030 ^ 68040 ^ 68060 ^ 68080 ^ 
-68K ISA                          |  X     ​| ​ X     ​| ​ X     ​| ​ X    |  X    |  X     |+68k ISA                          |  X     ​| ​ X     ​| ​ X     ​| ​ X    |  X    |  X     |
 | Extended EA-modes ​               |        |  X     ​| ​ X     ​| ​ X    |  X    |  X     | | Extended EA-modes ​               |        |  X     ​| ​ X     ​| ​ X    |  X    |  X     |
 | BitFields ​                       |        |  X     ​| ​ X     ​| ​ X    |  X    |  X     | | BitFields ​                       |        |  X     ​| ​ X     ​| ​ X    |  X    |  X     |
Line 97: Line 99:
   * [[.code_samples:​|68080 asm code samples]]   * [[.code_samples:​|68080 asm code samples]]
  
-^ Unsupported instructions ^ Notes ^ +68080 lets you use EA as 1 source and to update 3rd registers - so normally not overwrite source registers. 
-| ''​TAS2''​ | Never used on AmigaOS | + 
-''​MMU''​-related ​| Not implemented |+''​MMU''​-related ​instructions are not supported. ​ These are rarely used on AmigaOS.
  
 ==== AMMX: New 64-bit instructions ==== ==== AMMX: New 64-bit instructions ====
  
 These instructions are very similar to the ''​SSE''​ / ''​AltiVec''​ versions of them. These instructions are very similar to the ''​SSE''​ / ''​AltiVec''​ versions of them.
- 
-68080 lets you use EA as 1 source and to update 3rd registers - so normally not overwrite source registers. 
  
   * Quick Reference: [[http://​www.apollo-core.com/​AMMXQuickRef.pdf|PDF]]   * Quick Reference: [[http://​www.apollo-core.com/​AMMXQuickRef.pdf|PDF]]
Last modified: le 2020/08/02 12:37