84PCE:Ports:1000 - Revision history

Zeroko: Added need for flash unlock on M+

2022-01-22T04:38:54Z

Added need for flash unlock on M+

2021-07-10T03:24:37Z

rev M instead of python

2021-07-05T23:55:38Z

‎Serial Controller

2019-07-01T07:28:27Z

‎Serial Controller

2019-07-01T07:28:07Z

‎Serial Controller

2019-07-01T06:37:53Z

‎Serial Controller

2019-06-30T09:45:42Z

‎Serial Controller

2019-06-30T09:45:23Z

‎Serial Controller

2019-06-30T09:19:39Z

2019-06-30T09:00:23Z

‎Serial Controller

@@ Line 71: / Line 71: @@
 == Serial Controller ==
-Only used in HW revisions M and later (NB: all python edition calcs are M+).
+Only used in HW revisions M and later (NB: all python edition calcs are M+). Flash must be unlocked in order to write to these ports, or the write will be ignored.
 For more information see the [[84PCE:OS:Serial_Flash_Commands|serial commands]].

@@ Line 71: / Line 71: @@
 == Serial Controller ==
-Only used in the Python Edition. For more information see the [[84PCE:OS:Serial_Flash_Commands|serial commands]].
+Only used in HW revisions M and later (NB: all python edition calcs are M+).
 {|-

@@ Line 148: / Line 148: @@
 |01
 |Bit 0 set when the command finishes and the busy bit is cleared, write 1 to clear.
 |-
 |1830

@@ Line 141: / Line 141: @@
 |1818
 |00
-|02
+|03
 |Bit 0/1 is set when bytes can be written/read through port $1900.
 |-

@@ Line 142: / Line 142: @@
 |00
 |02
-|Bit 1 set when port $1900 is ready to transfer bytes.
+|Bit 0/1 is set when bytes can be written/read through port $1900.
 |-
 |1824

@@ Line 121: / Line 121: @@
 |1808
 |00000000
-|000001FF
+|FFFFFFFF
 |Number of bytes to transfer through port $1900 with the current flash command.
 |-

@@ Line 105: / Line 105: @@
 |-
 |1805
-|000000
+|00
-|010000
+|00
-|Unknown, something to do with the current flash command, always seems to be $0100.
+|Unknown, something to do with the current flash command, always seems to be $00.
 |-
 |1808
@@ Line 116: / Line 126: @@
 |180C
 |00
-|46
+|C6
-|Bit 1 might be direction (0 = in, 1 = out). Bit 6 might be quad-spi mode. Bits 2 and others unknown.
+|Bit 1 might be direction (0 = in, 1 = out). Other bits unknown.
 |-
 |180D
 |0000
-|0000
+|B000
-|Unknown, possibly something to do with the current flash command.
+|Unknown, something to do with the current flash command, usually $0000, rarely $B000.
 |-
 |180F
@@ Line 138: / Line 148: @@
 |01
 |Bit 0 set when the command finishes and the busy bit is cleared, write 1 to clear.
 |-
 |1900

@@ Line 66: / Line 66: @@
 |FF
 |Ports 1009-100F latch value written
 |-
 |}
@@ Line 93: / Line 83: @@
 |FF
 |Probably ignored for compatibility with the parallel interface.
 |-
 |1800

@@ Line 117: / Line 117: @@
 |00
 |46
-|Bit 1 might be direction (0 = in, 1 = out). Bits 2, 6, and others unknown.
+|Bit 1 might be direction (0 = in, 1 = out). Bit 6 might be quad-spi mode. Bits 2 and others unknown.
 |-
 |180D
@@ Line 137: / Line 137: @@
 |00
 |01
-|Bit 0 set when the command finishes, write 1 to clear.
+|Bit 0 set when the command finishes and the busy bit is cleared, write 1 to clear.
 |-
 |1900