Sirius Joyport and mame's apple2 driver

So I was reading up on the Sirius Joyport which was a box to convert Atari Joysticks to the Apple 2 Gameport and thought that it wouldn't be hard to add to mame's apple2 driver. All it really does is put an atari joystick on Pushbuttons 0,1 and 2 and selecting the button to read with annunciator #1.

https://www.atarimagazines.com/cva/v1n1/joysticks.php

or if you want the original source of the article:

https://archive.org/details/Video_Arcade_Games_Vol_1_No_1_1983-09_Creative_Computing_US/page/n101



It's a bit of a hack, but it's more of a proof of concept than anything else. You can switch the gameport from normal to sirius joyport on the fly which is useful.

$ diff mame205_extract/mame/src/mame/drivers/apple2.cpp  apple2.cpp 
114a115,116
>                 m_djoy_0_1(*this, "djoy_0_1"),
>                 m_djoy_b(*this, "djoy_b"),
136a139
>         required_ioport m_djoy_0_1, m_djoy_b;
640a644
>              if (!(m_sysconfig->read() & 0x80)) // if not Sirius Joyport enabled
641a646,650
>              else {
>                     // Sirius Joyport return joystick button, active low so read is inverted before &,
>                     //  return 0x0 if pressed, 0x80 if not pressed
>                     return (~(m_djoy_b->read()) & 0x01) ? 0x0 : 0x80;
>                     }
644c653,659
<   return (m_joybuttons->read() & 0x20) ? 0x80 : 0;
---
>  if (!(m_sysconfig->read() & 0x80))  // if not Sirius Joyport enabled
>           return (m_joybuttons->read() & 0x20) ? 0x80 : 0;
>         else {
>                 // Sirius Joyport return Up (0x01) or Left (0x04) depending on Annunciator #1,
>                 //  active low so read is inverted before &, return 0x0 if pressed, 0x80 if not pressed
>                 return ((~(m_djoy_0_1->read())) & ((m_an1) ? 0x01 : 0x04)) ? 0x0 : 0x80;
>                }
646a662
>                if (!(m_sysconfig->read() & 0x80)) {  // if not Sirius Joyport enabled
652a669,675
>                }
> 
>                else {  
>                // Sirius Joyport return status of Down (0x02) or Right (0x08) depending on Annunciator #1,
>                //  active low so read is inverted before &, return 0x0 if pressed, 0x80 if not pressed
>                return ((~(m_djoy_0_1->read())) & ((m_an1) ? 0x02 : 0x08)) ? 0x0 : 0x80;
> }
1146a1170,1191
> static INPUT_PORTS_START( apple2_sirius_joyport )
>          PORT_START("djoy_0_1")
>          PORT_BIT(0x01, 0x01, IPT_JOYSTICK_UP)    PORT_CODE(KEYCODE_8_PAD) PORT_CODE(JOYCODE_Y_UP_SWITCH)    PORT_PLAYER(1)
>          PORT_BIT(0x02, 0x02, IPT_JOYSTICK_DOWN)  PORT_CODE(KEYCODE_2_PAD) PORT_CODE(JOYCODE_Y_DOWN_SWITCH)  PORT_PLAYER(1)
>          PORT_BIT(0x04, 0x04, IPT_JOYSTICK_LEFT)  PORT_CODE(KEYCODE_4_PAD) PORT_CODE(JOYCODE_X_LEFT_SWITCH)  PORT_PLAYER(1)
>          PORT_BIT(0x08, 0x08, IPT_JOYSTICK_RIGHT) PORT_CODE(KEYCODE_6_PAD) PORT_CODE(JOYCODE_X_RIGHT_SWITCH) PORT_PLAYER(1)
>          PORT_BIT(0x10, 0x10, IPT_JOYSTICK_UP)    PORT_CODE(KEYCODE_8_PAD) PORT_CODE(JOYCODE_Y_UP_SWITCH)    PORT_PLAYER(2)
>          PORT_BIT(0x20, 0x20, IPT_JOYSTICK_DOWN)  PORT_CODE(KEYCODE_2_PAD) PORT_CODE(JOYCODE_Y_DOWN_SWITCH)  PORT_PLAYER(2)
>          PORT_BIT(0x40, 0x40, IPT_JOYSTICK_LEFT)  PORT_CODE(KEYCODE_4_PAD) PORT_CODE(JOYCODE_X_LEFT_SWITCH)  PORT_PLAYER(2)
>          PORT_BIT(0x80, 0x80, IPT_JOYSTICK_RIGHT) PORT_CODE(KEYCODE_6_PAD) PORT_CODE(JOYCODE_X_RIGHT_SWITCH) PORT_PLAYER(2)
> 
>          PORT_START("djoy_b")
>          PORT_BIT(0x01, 0x01, IPT_BUTTON1) PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(JOYCODE_BUTTON1) PORT_PLAYER(1)
>          PORT_BIT(0x02, 0x02, IPT_BUTTON1) PORT_CODE(JOYCODE_BUTTON1)  PORT_PLAYER(2)
>          PORT_BIT(0x04, 0x04, IPT_UNUSED)
>          PORT_BIT(0x08, 0x08, IPT_UNUSED)
>          PORT_BIT(0x10, 0x10, IPT_BUTTON2) PORT_CODE(KEYCODE_DEL_PAD) PORT_CODE(JOYCODE_BUTTON2) PORT_PLAYER(1)
>          PORT_BIT(0x20, 0x20, IPT_BUTTON2) PORT_CODE(JOYCODE_BUTTON2) PORT_PLAYER(2)
>          PORT_BIT(0x40, 0x40, IPT_UNUSED)
>          PORT_BIT(0x80, 0x80, IPT_UNUSED)
> INPUT_PORTS_END
> 
1147a1193
>         PORT_INCLUDE( apple2_sirius_joyport )
1161a1208,1212
> 
>         PORT_CONFNAME(0x80, 0x00, "Gameport type")
>         PORT_CONFSETTING(0x00, "Normal")
>         PORT_CONFSETTING(0X80, "Sirius Joyport (Atari Digital)")
> 
$ 


=======================================

If it helps to see more context around the diff:


$ diff mame205_extract/mame/src/mame/drivers/apple2.cpp  apple2.cpp -C5
*** mame205_extract/mame/src/mame/drivers/apple2.cpp 
--- src/mame/drivers/apple2.cpp
***************
*** 110,119 ****
--- 110,121 ----
    m_scantimer(*this, "scantimer"),
    m_ram(*this, RAM_TAG),
    m_ay3600(*this, A2_KBDC_TAG),
    m_video(*this, A2_VIDEO_TAG),
    m_a2bus(*this, "a2bus"),
+                 m_djoy_0_1(*this, "djoy_0_1"),
+                 m_djoy_b(*this, "djoy_b"),
    m_joy1x(*this, "joystick_1_x"),
    m_joy1y(*this, "joystick_1_y"),
    m_joy2x(*this, "joystick_2_x"),
    m_joy2y(*this, "joystick_2_y"),
    m_joybuttons(*this, "joystick_buttons"),
***************
*** 132,141 ****
--- 134,144 ----
   required_device<timer_device> m_scantimer;
   required_device<ram_device> m_ram;
   required_device<ay3600_device> m_ay3600;
   required_device<a2_video_device> m_video;
   required_device<a2bus_device> m_a2bus;
+         required_ioport m_djoy_0_1, m_djoy_b;
   required_ioport m_joy1x, m_joy1y, m_joy2x, m_joy2y, m_joybuttons;
   required_ioport m_kbspecial;
   required_ioport m_kbrepeat;
   optional_ioport m_resetdip;
   required_ioport m_sysconfig;
***************
*** 636,657 ****
   {
   case 0: // cassette in
    return m_cassette->input() > 0.0 ? 0x80 : 0;
  
   case 1:  // button 0
    return (m_joybuttons->read() & 0x10) ? 0x80 : 0;
  
   case 2:  // button 1
!   return (m_joybuttons->read() & 0x20) ? 0x80 : 0;
  
   case 3:  // button 2
    // check if SHIFT key mod configured
    if (m_sysconfig->read() & 0x04)
    {
     return ((m_joybuttons->read() & 0x40) || (m_kbspecial->read() & 0x06)) ? 0x80 : 0;
    }
    return (m_joybuttons->read() & 0x40) ? 0x80 : 0;
  
   case 4:  // joy 1 X axis
    return (machine().time().as_double() < m_joystick_x1_time) ? 0x80 : 0;
  
   case 5:  // joy 1 Y axis
--- 639,680 ----
   {
   case 0: // cassette in
    return m_cassette->input() > 0.0 ? 0x80 : 0;
  
   case 1:  // button 0
+              if (!(m_sysconfig->read() & 0x80)) // if not Sirius Joyport enabled
    return (m_joybuttons->read() & 0x10) ? 0x80 : 0;
+              else {
+                     // Sirius Joyport return joystick button, active low so read is inverted before &,
+                     //  return 0x0 if pressed, 0x80 if not pressed
+                     return (~(m_djoy_b->read()) & 0x01) ? 0x0 : 0x80;
+                     }
  
   case 2:  // button 1
!  if (!(m_sysconfig->read() & 0x80))  // if not Sirius Joyport enabled
!           return (m_joybuttons->read() & 0x20) ? 0x80 : 0;
!         else {
!                 // Sirius Joyport return Up (0x01) or Left (0x04) depending on Annunciator #1,
!                 //  active low so read is inverted before &, return 0x0 if pressed, 0x80 if not pressed
!                 return ((~(m_djoy_0_1->read())) & ((m_an1) ? 0x01 : 0x04)) ? 0x0 : 0x80;
!                }
  
   case 3:  // button 2
+                if (!(m_sysconfig->read() & 0x80)) {  // if not Sirius Joyport enabled
    // check if SHIFT key mod configured
    if (m_sysconfig->read() & 0x04)
    {
     return ((m_joybuttons->read() & 0x40) || (m_kbspecial->read() & 0x06)) ? 0x80 : 0;
    }
    return (m_joybuttons->read() & 0x40) ? 0x80 : 0;
+                }
+ 
+                else {  
+                // Sirius Joyport return status of Down (0x02) or Right (0x08) depending on Annunciator #1,
+                //  active low so read is inverted before &, return 0x0 if pressed, 0x80 if not pressed
+                return ((~(m_djoy_0_1->read())) & ((m_an1) ? 0x02 : 0x08)) ? 0x0 : 0x80;
+ }
  
   case 4:  // joy 1 X axis
    return (machine().time().as_double() < m_joystick_x1_time) ? 0x80 : 0;
  
   case 5:  // joy 1 Y axis
***************
*** 1142,1152 ****
--- 1165,1198 ----
   PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1)  PORT_PLAYER(1)            PORT_CODE(KEYCODE_0_PAD)    PORT_CODE(JOYCODE_BUTTON1)
   PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON2)  PORT_PLAYER(1)            PORT_CODE(KEYCODE_ENTER_PAD)PORT_CODE(JOYCODE_BUTTON2)
   PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_BUTTON1)  PORT_PLAYER(2)            PORT_CODE(JOYCODE_BUTTON1)
  INPUT_PORTS_END
  
+ static INPUT_PORTS_START( apple2_sirius_joyport )
+          PORT_START("djoy_0_1")
+          PORT_BIT(0x01, 0x01, IPT_JOYSTICK_UP)    PORT_CODE(KEYCODE_8_PAD) PORT_CODE(JOYCODE_Y_UP_SWITCH)    PORT_PLAYER(1)
+          PORT_BIT(0x02, 0x02, IPT_JOYSTICK_DOWN)  PORT_CODE(KEYCODE_2_PAD) PORT_CODE(JOYCODE_Y_DOWN_SWITCH)  PORT_PLAYER(1)
+          PORT_BIT(0x04, 0x04, IPT_JOYSTICK_LEFT)  PORT_CODE(KEYCODE_4_PAD) PORT_CODE(JOYCODE_X_LEFT_SWITCH)  PORT_PLAYER(1)
+          PORT_BIT(0x08, 0x08, IPT_JOYSTICK_RIGHT) PORT_CODE(KEYCODE_6_PAD) PORT_CODE(JOYCODE_X_RIGHT_SWITCH) PORT_PLAYER(1)
+          PORT_BIT(0x10, 0x10, IPT_JOYSTICK_UP)    PORT_CODE(KEYCODE_8_PAD) PORT_CODE(JOYCODE_Y_UP_SWITCH)    PORT_PLAYER(2)
+          PORT_BIT(0x20, 0x20, IPT_JOYSTICK_DOWN)  PORT_CODE(KEYCODE_2_PAD) PORT_CODE(JOYCODE_Y_DOWN_SWITCH)  PORT_PLAYER(2)
+          PORT_BIT(0x40, 0x40, IPT_JOYSTICK_LEFT)  PORT_CODE(KEYCODE_4_PAD) PORT_CODE(JOYCODE_X_LEFT_SWITCH)  PORT_PLAYER(2)
+          PORT_BIT(0x80, 0x80, IPT_JOYSTICK_RIGHT) PORT_CODE(KEYCODE_6_PAD) PORT_CODE(JOYCODE_X_RIGHT_SWITCH) PORT_PLAYER(2)
+ 
+          PORT_START("djoy_b")
+          PORT_BIT(0x01, 0x01, IPT_BUTTON1) PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(JOYCODE_BUTTON1) PORT_PLAYER(1)
+          PORT_BIT(0x02, 0x02, IPT_BUTTON1) PORT_CODE(JOYCODE_BUTTON1)  PORT_PLAYER(2)
+          PORT_BIT(0x04, 0x04, IPT_UNUSED)
+          PORT_BIT(0x08, 0x08, IPT_UNUSED)
+          PORT_BIT(0x10, 0x10, IPT_BUTTON2) PORT_CODE(KEYCODE_DEL_PAD) PORT_CODE(JOYCODE_BUTTON2) PORT_PLAYER(1)
+          PORT_BIT(0x20, 0x20, IPT_BUTTON2) PORT_CODE(JOYCODE_BUTTON2) PORT_PLAYER(2)
+          PORT_BIT(0x40, 0x40, IPT_UNUSED)
+          PORT_BIT(0x80, 0x80, IPT_UNUSED)
+ INPUT_PORTS_END
+ 
  INPUT_PORTS_START( apple2_gameport )
+         PORT_INCLUDE( apple2_sirius_joyport )
   PORT_INCLUDE( apple2_joystick )
  INPUT_PORTS_END
  
  INPUT_PORTS_START( apple2_sysconfig )
   PORT_START("a2_config")
***************
*** 1157,1166 ****
--- 1203,1217 ----
   PORT_CONFSETTING(0x03, "Amber")
   PORT_CONFNAME(0x04, 0x04, "Shift key mod")  // default to installed
   PORT_CONFSETTING(0x00, "Not present")
   PORT_CONFSETTING(0x04, "Installed")
+ 
+         PORT_CONFNAME(0x80, 0x00, "Gameport type")
+         PORT_CONFSETTING(0x00, "Normal")
+         PORT_CONFSETTING(0X80, "Sirius Joyport (Atari Digital)")
+ 
  INPUT_PORTS_END
  
   /*
     Apple II / II Plus key matrix (from "The Apple II Circuit Description")
  
$ 

Boulderdash with the Startup Screen where you can select the Joyport by pressing J.



Stellar 7 controls screen, you can select the Joyport with CTRL+A.




The games that I've found to work with the Sirius Joyport are:

Berzap!
Borg
Wavy Navy
Seadragon
Boulder Dash 1, Boulder Dash 2
Dino Eggs
Bouncing Kamungas
Lunar Leeper
Roundabout
Pest Patrol
Jawbreaker II
Vindicators (CTRL+M)
Miner 2049er, Miner II
Stellar 7
Outpost
Fly Wars
Lemmings
Plasmania


Stellar 7 really gets fast and furious with ramping the speed up to 1.5 or 2.0. What a superb game.

./mame64 apple2p stellar7 -speed 2.0

I can only finish the game with save states! Shift+F7 and F7 are your friend! I think you have to hit Gir Draxon 6 times, and he's got triple shots, super speed and invisibility.






I actually prefer boulderdash with the speed a little less at 0.8 or 0.9 making Rockford easier to control.