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Update whitespace and bullet point refs

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D. Rimron-Soutter
2025-10-13 18:12:27 +01:00
parent d5253f073b
commit 1bc613dd4e
1 changed files with 13 additions and 10 deletions
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23
data/nextreg.txt
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@@ -32,17 +32,17 @@ Generally a set bit indicates the property is asserted
(R)
bits 7:4 = Major version number
bits 3:0 = Minor version number
(see register 0x0E for sub minor version number)
see nextreg 0x0E for sub minor version number
0x02 (02) => Reset
(R)
bit 7 = 1 if the reset signal to the expansion bus and esp is asserted
bits 6:5 = Reserved
bit 4 = 1 if multiface nmi was generated by an i/o trap (experimental, see nextreg 0xda)
bit 4 = 1 if multiface nmi was generated by an i/o trap (experimental, see nextreg 0xDA)
bit 3 = 1 if multiface nmi was generated by this nextreg
bit 2 = 1 if divmmc nmi was generated by this nextreg
bit 1 = 1 if the last reset was a hard reset
bit 0 = 1 if the last reset was a soft reset
bit 1 = 1 if the last reset was a hard reset *
bit 0 = 1 if the last reset was a soft reset *
* Only one of bits 1:0 will be set
(W)
bit 7 = Assert and hold reset to the expansion bus and the esp wifi (hard reset = 0)
@@ -82,7 +82,8 @@ Generally a set bit indicates the property is asserted
011 = ZX +2A/+2B/+3
100 = Pentagon
0x04 (04) => Config Mapping (config mode only, bootrom disabled)
0x04 (04) => Config Mapping
config mode only, bootrom disabled
(W)
bit 7 = Reserved, must be 0
bits 6:0 = 16K SRAM bank mapped to 0x0000-0x3FFF (hard reset = 0)
@@ -105,9 +106,9 @@ Joystick modes:
101 = MD 1 (3 or 6 button joystick port 0x1F)
110 = MD 2 (3 or 6 button joystick port 0x37)
111 = User Defined Keys Joystick
* Joysticks can be placed in i/o mode via nextreg 0x0B.
* Joysticks can be placed in i/o mode via nextreg 0x0B
* Programming the user defined keys joystick is done through the ps2 keymap interface
on nextreg 0x28, 0x29 and 0x2B:
on nextreg 0x28, nextreg 0x29 and nextreg 0x2B:
1. Write 128 to nextreg 0x28
2. Write 0 (left joystick) or 16 (right joystick) to nextreg 0x29
3. Write twelve bytes to nextreg 0x2B in order. The bytes correspond to the twelve
@@ -206,9 +207,10 @@ Joystick modes:
* CTC channel 3 is currently used to drive pin 7 in clock mode. Freq = Fctc3 / 2.
** CTS_n is only active if the seleced uart is in hw flow control mode.
0x0E (14) => Core Version (sub minor number)
0x0E (14) => Core Version
Sub-minor number
(R)
(see register 0x01 for the major and minor version number)
see nextreg 0x01 for the major and minor version number
0x0F (15) => Board ID
(R)
@@ -230,7 +232,8 @@ Joystick modes:
bits 4:0 = Core ID 0-31 (config mode only) *
* A write of an out of range core id is ignored; this is the preferred way to determine max id
0x11 (17) => Video Timing (writable in config mode only)
0x11 (17) => Video Timing
Writable in config mode only.
(R/W)
bits 7:3 = Reserved, must be 0
bits 2:0 = Mode (VGA = 0..6, HDMI = 7)