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ibmpc_usb: Fix keyboard ID for XT

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The converter doesn't read keyboard ID for XT now.
ibmpc.protocol should be set at WAIT_AA before calling read_keybaord_id().
This commit is contained in:
tmk 2023-02-17 11:56:09 +09:00
parent d51023bc8b
commit b0ca953af2
2 changed files with 20 additions and 7 deletions
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18
converter/ibmpc_usb/ibmpc_usb.cpp
View file

@ -132,9 +132,11 @@ int16_t IBMPCConverter::read_wait(uint16_t wait_ms)
* Keyboard ID
*
* 0000: IBM 84-key keyboard
* FFFF: XT keyobard
* FFFF: No keyboard or XT
* FFFE: Broken AT or PS/2 keyboard?
* FFFD: Zenith Z-150 AT
* FFFC: IBM XT
* FFFB: Clone XT
* AB83: AT or PS/2 keyboard
* BFBF: IBM Terminal keyboard
* 00FF: Mouse
@ -149,17 +151,21 @@ uint16_t IBMPCConverter::read_keyboard_id(void)
// https://deskthority.net/viewtopic.php?p=495196#p495196
if (ibmpc.protocol == IBMPC_PROTOCOL_AT_Z150) return 0xFFFD;
// XT doesn't response
if (ibmpc.protocol == IBMPC_PROTOCOL_XT_IBM) return 0xFFFC;
if (ibmpc.protocol == IBMPC_PROTOCOL_XT_CLONE) return 0xFFFB;
// Disable
//code = ibmpc_host_send(0xF5);
// Read ID
code = ibmpc.host_send(0xF2);
if (code == -1) { id = 0xFFFF; goto DONE; } // XT or No keyboard
if (code == -1) { id = 0xFFFF; goto DONE; } // No keyboard or XT
if (code != 0xFA) { id = 0xFFFE; goto DONE; } // Broken PS/2?
// ID takes 500ms max TechRef [8] 4-41
code = read_wait(500);
if (code == -1) { id = 0x0000; goto DONE; } // AT
if (code == -1) { id = 0x0000; goto DONE; } // AT IBM 84-key
id = (code & 0xFF)<<8;
// Mouse responds with one-byte 00, this returns 00FF [y] p.14
@ -322,12 +328,16 @@ uint8_t IBMPCConverter::process_interface(void)
if (0x0000 == keyboard_id) { // CodeSet2 AT(IBM PC AT 84-key)
keyboard_kind = PC_AT;
} else if (0xFFFF == keyboard_id) { // CodeSet1 XT
} else if (0xFFFF == keyboard_id) { // No keyboard or XT
keyboard_kind = PC_XT;
} else if (0xFFFE == keyboard_id) { // CodeSet2 PS/2 fails to response?
keyboard_kind = PC_AT;
} else if (0xFFFD == keyboard_id) { // Zenith Z-150 AT
keyboard_kind = PC_AT;
} else if (0xFFFC == keyboard_id) { // IBM XT
keyboard_kind = PC_XT;
} else if (0xFFFB == keyboard_id) { // Clone XT
keyboard_kind = PC_XT;
} else if (0x00FF == keyboard_id) { // Mouse is not supported
keyboard_kind = PC_MOUSE;
} else if (0xAB85 == keyboard_id || // IBM 122-key Model M, NCD N-97

9
converter/ibmpc_usb/ibmpc_usb.hpp
View file

@ -16,10 +16,13 @@ typedef enum { NONE, PC_XT, PC_AT, PC_TERMINAL, PC_MOUSE } keyboard_kind_t;
kind == PC_MOUSE ? "MOUSE" : \
"NONE")
#define ID_STR(id) (id == 0xFFFE ? "_????" : \
#define ID_STR(id) (id == 0xFFFF ? "_NONE" : \
(id == 0xFFFE ? "_ERROR" : \
(id == 0xFFFD ? "_Z150" : \
(id == 0x0000 ? "_AT84" : \
"")))
(id == 0xFFFC ? "_IBM" : \
(id == 0xFFFB ? "_CLONE" : \
(id == 0x0000 ? "_IBM84" : \
""))))))
#define ROW(code) ((code>>4)&0x07)
#define COL(code) (code&0x0F)