| Line 146... |
Line 146... |
| 146 |
jc FAIL /* not DR-DOS */
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146 |
jc FAIL /* not DR-DOS */
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| 147 |
|
147 |
|
| 148 |
add bx, 0x12
|
148 |
add bx, 0x12
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| 149 |
mov ax, es:[bx] /* read the segment of the kernel environment */
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149 |
mov ax, es:[bx] /* read the segment of the kernel environment */
|
| 150 |
mov kernenvseg, ax /* save the kern env segment for later */
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150 |
mov kernenvseg, ax /* save the kern env segment for later */
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| 151 |
mov es:[bx], word ptr 0 /* reset the pointer to kernel env as done by DR COMMAND.COM */
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151 |
mov word ptr [es:bx], 0 /* reset the pointer to kernel env as done by DR COMMAND.COM */
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| 152 |
|
152 |
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| 153 |
/* if DR-DOS env is at seg 0x60 then overwrite my own env in PSP with this.
|
153 |
/* if DR-DOS env is at seg 0x60 then overwrite my own env in PSP with this.
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| 154 |
* Seg 0x60 is used since https://github.com/SvarDOS/edrdos/issues/88 and
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154 |
* Seg 0x60 is used since https://github.com/SvarDOS/edrdos/issues/88 and
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| 155 |
* it is safe to be used as it won't be overwritten */
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155 |
* it is safe to be used as it won't be overwritten */
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| 156 |
cmp ax, 0x60
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156 |
cmp ax, 0x60
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